The plurals of -cia, -gia, -cio, -gio nouns sit at the meeting point of orthography and phonology. The i in these endings is doing two different jobs depending on the word: in some it's a spelling marker that signals the soft /tʃ/ or /dʒ/ pronunciation of the c or g, and in others it's a real vowel that's heard in pronunciation. When the plural ending takes over the soft-signaling job — because the new ending begins with e or i, which already palatalize c and g — the spelling-marker i becomes redundant and drops out. When the i is a real vowel, it stays.
The result is a rule that looks finicky but is actually consistent: drop the i if it's there only for spelling, keep it if it's there for sound. This page lays out the modern rule, which has been simplified considerably since the early 20th century, and walks through the examples you'll meet most often.
1. Why the i is there in the first place
In Italian orthography, c and g are read two ways depending on what follows:
- c, g
- a, o, u → hard /k/, /g/ (casa, cosa, cura, gatto, gola, gusto)
- c, g
- e, i → soft /tʃ/, /dʒ/ (cena, ci, gente, gita)
To write the soft sound /tʃa/, /tʃo/, /dʒa/, /dʒo/, Italian inserts an i between the consonant and the back vowel: ciao, ciotola, giallo, giorno. This i is not pronounced as a separate vowel — it's just a graphic signal that the c or g should be read soft. Compare:
- cane (dog) /'ka-ne/ — c is hard before a
- cena (dinner) /'tʃe-na/ — c is soft before e
- ciao (hi) /tʃa-o/ — c is soft thanks to the spelling-marker i
When this kind of word is pluralized and the new ending begins with e or i, the spelling-marker i becomes unnecessary — e and i already trigger soft pronunciation by themselves. So Italian orthography drops the redundant i: arancia /a-ran-tʃa/ → arance /a-ran-tʃe/, where the e alone now does the palatalizing job.
But if the i in the singular is stressed and pronounced as a real vowel, it can't be dropped, because doing so would lose a syllable. farmacia is /far-ma-'tʃi-a/, with stress on the i. The plural is farmacie /far-ma-'tʃi-e/ — the stressed i stays, and the e is added as a separate syllable.
2. The modern rule
Here's the rule used in modern standard Italian, codified by the Accademia della Crusca:
| Condition on the i in singular | Plural treatment | Example |
|---|---|---|
| Unstressed, preceded by a consonant | i drops | arancia → arance |
| Unstressed, preceded by a vowel | i stays | camicia → camicie |
| Stressed (the i is a real vowel) | i stays | farmacia → farmacie |
This rule was simplified considerably in the 20th century — older Italian wrote aranci, esempii, pregi with mandatory double i in some contexts, but modern usage drops them. The Accademia della Crusca's recommendation has been the guiding norm since roughly the 1970s.
3. Feminine -cia, -gia: the i drops after a consonant
When the i in -cia or -gia follows a consonant and is unstressed, it drops in the plural.
| Singular | Plural | English | Why i drops |
|---|---|---|---|
| l'arancia | le arance | orange | preceded by 'n', unstressed |
| la pioggia | le piogge | rain | preceded by 'g', unstressed |
| la spiaggia | le spiagge | beach | preceded by 'g', unstressed |
| la guancia | le guance | cheek | preceded by 'n', unstressed |
| la bilancia | le bilance | scale | preceded by 'n', unstressed |
| la lancia | le lance | spear, lance | preceded by 'n', unstressed |
| la roccia | le rocce | rock | preceded by 'c', unstressed |
| la caccia | le cacce | hunt | preceded by 'c', unstressed |
| la frangia | le frange | fringe | preceded by 'n', unstressed |
| la goccia | le gocce | drop | preceded by 'c', unstressed |
Al mercato vendono le arance siciliane — quelle di Catania sono le più dolci.
At the market they sell Sicilian oranges — the ones from Catania are the sweetest.
Le piogge di novembre hanno allagato le strade del centro.
November rains have flooded the streets in the center.
Le spiagge della Sardegna sono famose per la sabbia bianca.
Sardinia's beaches are famous for their white sand.
Le gocce di pioggia battevano sulle finestre tutta la notte.
The raindrops were beating against the windows all night long.
4. Feminine -cia, -gia: the i stays after a vowel
When the i follows a vowel, it stays in the plural — even if it's unstressed. The reasoning: dropping it could create an ambiguous spelling, and Italian conservatively keeps it to preserve clarity.
| Singular | Plural | English | Why i stays |
|---|---|---|---|
| la camicia | le camicie | shirt | i preceded by vowel-like context (the c is the consonant; tradition keeps it) |
| la ciliegia | le ciliegie | cherry | preceded by 'e' (vowel) |
| la valigia | le valigie | suitcase | preceded by 'i' (vowel) — though i in -lig- is a glide; tradition keeps |
| la grigia | (adj. only) | gray (f.adj.) | plural 'grigie' |
| l'audacia | le audacie | boldness, daring | preceded by 'a' (vowel) |
Le camicie bianche stirate aspettano nell'armadio per la settimana di lavoro.
The ironed white shirts are waiting in the closet for the work week.
Le ciliegie del nostro giardino maturano sempre per primi alla fine di maggio.
The cherries from our garden are always the first to ripen at the end of May.
Ho preso due valigie per il viaggio in Australia — una sola non bastava.
I took two suitcases for the Australia trip — one alone wasn't enough.
The camicia/camicie case is borderline — some grammars treat the c as the relevant preceding sound (which would suggest camice), but tradition and modern usage retain camicie with the i. Valigia/valigie is the same situation; both are now standard with i.
5. Feminine -cia, -gia: stressed i always stays
When the i in -cia/-gia is stressed — that is, when it's the actual vowel of the syllable carrying the word stress — it always stays in the plural. These words are pronounced with a clear two-syllable ending /-tʃi-a/ or /-dʒi-a/.
| Singular | Plural | English | Stress |
|---|---|---|---|
| la farmacia | le farmacie | pharmacy | far-ma-CI-a |
| la bugia | le bugie | lie (untruth) | bu-GI-a |
| la magia | le magie | magic | ma-GI-a |
| l'energia | le energie | energy/energies | e-ner-GI-a |
| l'allergia | le allergie | allergy/allergies | al-ler-GI-a |
| la pizzeria | le pizzerie | pizzeria | piz-ze-RI-a |
| la nostalgia | le nostalgie | nostalgia | no-stal-GI-a |
Le farmacie italiane sono chiuse di domenica, ma ce n'è sempre una di turno aperta.
Italian pharmacies are closed on Sundays, but there's always one on duty open.
I bambini raccontano sempre delle bugie quando hanno paura di essere puniti.
Children always tell lies when they're afraid of being punished.
Le pizzerie napoletane vere usano solo pomodori San Marzano e mozzarella di bufala.
Real Neapolitan pizzerias use only San Marzano tomatoes and buffalo mozzarella.
Le mie allergie peggiorano sempre in primavera con i pollini.
My allergies always get worse in spring with the pollen.
6. Masculine -cio, -gio: the i drops if unstressed
The masculine pattern works the same way: unstressed i drops in the plural, stressed i stays.
| Singular | Plural | English |
|---|---|---|
| il bacio | i baci | kiss(es) |
| il viaggio | i viaggi | trip(s) |
| il formaggio | i formaggi | cheese(s) |
| il raggio | i raggi | ray(s) |
| il passaggio | i passaggi | passage(s), pass(es) |
| l'orologio | gli orologi | watch(es), clock(s) |
| il saggio | i saggi | essay(s), wise person/people |
| il messaggio | i messaggi | message(s) |
I baci dei nonni sono i più dolci, soprattutto quando ti vedono dopo molto tempo.
Grandparents' kisses are the sweetest, especially when they see you after a long time.
I miei viaggi in Asia mi hanno cambiato la vita.
My trips to Asia changed my life.
I formaggi italiani sono famosi in tutto il mondo — il parmigiano, il pecorino, la mozzarella.
Italian cheeses are famous all over the world — parmesan, pecorino, mozzarella.
I messaggi che mi hai mandato ieri sera mi hanno fatto sorridere.
The messages you sent me last night made me smile.
Stressed -io stays
When the i in -cio/-gio is stressed, it stays. This is rare — most masculine -cio/-gio words have antepenultimate stress and unstressed i. But it happens with some compound or specialized terms:
- il fruscio (rustle) — fru-SCI-o, stressed i — plural i fruscii
- il leggio (lectern) — leg-GI-o — plural i leggii
These cases are rare; the page on Plural of -io Nouns covers the broader -io pattern in detail.
I fruscii delle foglie autunnali creano una colonna sonora naturale.
The rustlings of autumn leaves create a natural soundtrack.
7. The simplification of modern Italian
Until well into the 20th century, Italian orthography was less consistent here. Older texts wrote:
- aranci (instead of modern arance) — the i was not yet uniformly dropped
- esempii with double i (instead of modern esempi)
- principii (instead of modern principi — though this is the -io class, see the next page)
Beginning roughly with the Accademia della Crusca's standardization efforts in the 1950s–70s, modern Italian settled on the cleaner rule outlined here. You may still encounter the older spellings in literary or pre-1970 texts; treat them as archaic but not wrong.
Nei testi dell'Ottocento si trovano ancora le forme antiche come 'aranci' o 'principii', che oggi sono considerate arcaiche.
In 19th-century texts you still find old forms like 'aranci' or 'principii', which are considered archaic today.
8. Comparison with -co/-go h-insertion
The -cia/-gia i-drop rule and the -ca/-ga h-insertion rule are mirror images of each other. Both serve the same goal — keeping the consonant's pronunciation consistent — but they go in opposite directions:
- h-insertion (amica → amiche): adds a letter to keep the hard /k/ that the new ending would otherwise palatalize.
- i-drop (arancia → arance): removes a letter that the new ending makes redundant.
In both cases the spelling adjusts so that pronunciation is preserved or unambiguous.
| Sound preserved | Singular | Plural | Mechanism |
|---|---|---|---|
| hard /k/ | amica /a-mi-ka/ | amiche /a-mi-ke/ | h-insertion |
| soft /tʃ/ | arancia /a-ran-tʃa/ | arance /a-ran-tʃe/ | i-drop |
| hard /g/ | riga /'ri-ga/ | righe /'ri-ge/ | h-insertion |
| soft /dʒ/ | pioggia /'pjod-dʒa/ | piogge /'pjod-dʒe/ | i-drop |
Once you see the symmetry, both rules click into place. The orthography is doing the same job in both cases: keeping pronunciation transparent.
9. Why this rule exists at all
Italian orthography is unusually phonetic — the goal is that a literate Italian can pronounce any written word correctly without prior exposure. This puts pressure on the spelling system to be consistent, and the cia/gia rule is a small piece of that consistency. If Italian wrote aranci with a hard c, learners would have to remember that aranci is an exception. By writing arance, the spelling itself signals soft c, and no exception list is needed.
The cost is the small bit of complexity on this page — the rule about when the i drops. But the payoff, multiplied across thousands of -cia/-gia/-cio/-gio nouns, is enormous: Italian readers don't have to memorize pronunciation as a separate skill from spelling.
10. Common Mistakes
❌ Le arancie del mercato sono molto dolci.
Incorrect — the i in 'arancia' is unstressed and preceded by 'n' (consonant), so it drops in the plural.
✅ Le arance del mercato sono molto dolci.
Correct — 'le arance'.
❌ Le pioggie di novembre hanno allagato la città.
Incorrect — i drops in 'pioggia → piogge' (preceded by g, unstressed).
✅ Le piogge di novembre hanno allagato la città.
Correct — 'le piogge'.
❌ Le farmace della città sono chiuse.
Incorrect — the i in 'farmacia' is stressed (far-ma-CI-a), so it stays in the plural.
✅ Le farmacie della città sono chiuse.
Correct — 'le farmacie'.
❌ I bacii degli innamorati sono i più sinceri.
Incorrect in modern Italian — 'bacio' has unstressed i, so the plural is 'baci' (single i).
✅ I baci degli innamorati sono i più sinceri.
Correct — 'i baci'.
❌ Le camice nel mio armadio sono tutte stirate.
Incorrect — 'camicia' keeps the i in the plural ('camicie'), since the i is preceded by what tradition treats as a vowel-like context.
✅ Le camicie nel mio armadio sono tutte stirate.
Correct — 'le camicie'.
❌ Le bilancie del laboratorio devono essere calibrate.
Incorrect — i drops in 'bilancia → bilance' (preceded by n, unstressed).
✅ Le bilance del laboratorio devono essere calibrate.
Correct — 'le bilance'.
Key takeaways
The i drops in the plural when it's unstressed and preceded by a consonant: arancia → arance, pioggia → piogge, bacio → baci, viaggio → viaggi.
The i stays when it's stressed (a real, pronounced vowel): farmacia → farmacie, bugia → bugie, energia → energie.
The i also stays when preceded by a vowel: camicia → camicie, ciliegia → ciliegie, valigia → valigie — this is the more conservative case, and modern usage retains the i.
The rule mirrors the -co/-go h-insertion: both mechanisms exist to keep pronunciation transparent across singular and plural. h-insertion adds a letter to preserve a hard sound; i-drop removes a letter that has become redundant.
When in doubt, check Treccani or another authoritative dictionary. Italian standardized this area only in the 20th century, and you'll see older forms in pre-1970 literary texts. The modern rule is what's described here.
The next page handles the related but distinct -io pattern: when masculine -io nouns take -i (single) vs. -ii (double) in the plural, depending on stress.
Now practice Italian
Reading grammar gets you part of the way. The exercises are where it sticks — free, no signup needed.
Open the Italian course →Related Topics
- Regular Plural FormationA1 — The four regular plural patterns of Italian nouns — and the trap that catches every English speaker: feminine -e nouns take -i in the plural, not -e.
- Plurals of -co, -go, -ca, -ga Nouns (h-insertion)A2 — How feminine -ca/-ga nouns predictably take -che/-ghe, and why masculine -co/-go nouns split unpredictably between hard (-chi/-ghi) and soft (-ci/-gi) plurals.
- Plural of -io Nouns (single or double i)A2 — Modern Italian's clean rule for -io plurals: single -i when the singular i is unstressed, double -ii only when the i is stressed and pronounced.
- Irregular Plurals: Historical Survivals and Gender-Shifting FormsA2 — The handful of Italian nouns whose plurals don't follow any regular pattern — historical residue from Latin, plus the body-part nouns that shift from masculine singular to feminine plural in -a.
- Gender of Nouns: Basic PatternsA1 — The default ending-to-gender pairings for Italian nouns, the reliable suffix-based heuristics, and the common exceptions that English speakers must memorize.