Forming Plurals: Overview | Romanian Grammar

Romanian builds its plurals out of a surprisingly small toolkit: there are really only three plural endings — -i, -e, and -uri — and which one a noun takes is largely decided by its gender. That is the easy half. The hard half, the part that catches every learner coming from English, is that adding the ending often changes the stem of the word: the vowel shifts (casă → case, poartă → porți), the final consonant softens (brad → brazi, perete → pereți), or both happen at once. So "form the plural" is genuinely two operations: pick the ending, and adjust the stem. This page surveys the whole system so the three dedicated pages — masculine, feminine, and neuter — make sense as variations on one theme.

💡

Romanian plurals = a small set of endings (-i, -e, -uri) + a stem alternation. English speakers reliably do the first half and forget the second. Brad doesn't become bradi; the d softens to z, giving brazi. The audible change is often in the stem, not the ending.

The endings, by gender

The gender of a noun does most of the work in predicting its plural ending. Here is the whole landscape on one chart:

Gender	Typical plural ending(s)	Example
Masculine	-i (almost always)	băiat → băieți, pom → pomi
Feminine	-e or -i	casă → case, floare → flori, ușă → uși
Neuter	-uri or -e	tren → trenuri, scaun → scaune

Masculine is the simplest: it is -i across the board. Feminine and neuter each split two ways, and that split — -e vs. -i for feminines, -uri vs. -e for neuters — is where most of the memorization lives. But before any of that, you have to deal with the stem.

În grădină avem mulți pomi, dar numai doi au făcut fructe anul ăsta.

We have lots of trees in the garden, but only two bore fruit this year. (pom → pomi)

Casele de pe stradă sunt toate vechi de peste o sută de ani.

The houses on the street are all over a hundred years old. (casă → case)

The real work: stem alternations

When you add a plural ending, the stem frequently changes. These alternations are not random — they are the regular result of certain vowels and consonants meeting the front vowel -i or the vowel -e. There are two big families.

Vowel alternations (mostly feminine and neuter)

The stressed vowel of the stem shifts when the ending is added:

a → e: masă → mese, fată → fete
a → ă: carte → cărți, vale → văi
oa → o: poartă → porți, floare → flori, coadă → cozi (and in many neuters the reverse happens: picior → picioare gains the diphthong)

Pe mese erau farfurii goale și pahare pe jumătate băute.

On the tables there were empty plates and half-drunk glasses. (masă → mese: a→e)

Toate porțile din sat se închid la lăsarea serii.

All the gates in the village close at nightfall. (poartă → porți: oa→o)

Consonant alternations (mostly masculine)

When -i attaches to a masculine noun, the final consonant palatalizes — it softens toward a y-like or hushing quality:

d → z: brad → brazi ("fir trees")
t → ț: perete → pereți ("walls"), frate → frați ("brothers")
s → ș: urs → urși ("bears")
st → șt: artist → artiști ("artists")

Brazii din pădure erau acoperiți de zăpadă până la vârf.

The fir trees in the forest were covered in snow all the way to the top. (brad → brazi: d→z)

Pereții camerei erau plini de tablouri vechi.

The walls of the room were covered in old paintings. (perete → pereți: t→ț)

Why the alternations happen (the underlying logic)

These changes look arbitrary if you memorize them word by word, but there is a real mechanism behind them. The plural endings -i and -e are front vowels. Centuries ago, when a front vowel followed certain stem vowels and consonants, it pulled them forward — a fronted toward e or ă, oa collapsed to o, and consonants like d, t, s softened into z, ț, ș. The alternations you memorize today are the fossilized result of that pull. You don't need the history to use Romanian, but it explains why the changes are systematic: the same vowel always shifts the same way, the same consonant always softens the same way. Learn the families, and you can predict the plural of a word you've never seen.

💡

Don't memorize plurals as random pairs. Learn the alternation families instead: d→z, t→ț, s→ș (consonants, before -i) and a→e, a→ă, oa→o (vowels). But check the gender first, because it decides the ending — and the ending decides whether a consonant softens at all. Brad is masculine, takes -i, and the front vowel pulls d→z: brazi. Gard ("fence") looks similar but is neuter, takes -uri, and -uri is not a front vowel — so the d stays put: garduri, never garzuri. Same final consonant, opposite outcome, because the gender sent them to different endings.

Source-language comparison: forget the English -s

English forms plurals by tacking -s (or -es) onto an unchanged stem: house → houses, tree → trees. The stem never moves; only the suffix is added. Romanian works on a completely different principle. There is no -s plural anywhere in the language, and the stem is an active participant: it can shift its vowel, soften its final consonant, or both. The handful of English irregulars where the stem changes — foot → feet, mouse → mice — are the closest analogy, but in Romanian that kind of stem change is the norm, not the exception. The single most damaging habit an English speaker can carry over is the assumption that the stem stays put.

Am văzut doi urși și o vulpe pe traseul de munte.

We saw two bears and a fox on the mountain trail. (urs → urși: s→ș, no -s anywhere)

Florile de pe balcon au înflorit toate deodată.

The flowers on the balcony all bloomed at once. (floare → flori: oa→o)

Common Mistakes

Don't transfer the English -s plural onto Romanian nouns:

❌ două trenuris / două trenus

Incorrect — Romanian has no -s plural; the neuter plural is trenuri.

✅ două trenuri

two trains

Don't add the ending while leaving the stem unchanged when it should alternate:

❌ doi bradi

Incorrect — the d softens to z before -i: brazi.

✅ doi brazi

two fir trees

Don't skip the vowel shift on feminine nouns:

❌ două mase (for 'two tables')

Incorrect — the a shifts to e: mese. (masă is the table; masa would be 'the table')

✅ două mese

two tables

Don't guess the wrong ending by ignoring gender — feminine floare is not neuter:

❌ floruri

Incorrect — floare is feminine and takes -i with oa→o: flori, not the neuter -uri.

✅ flori

flowers

Don't assume an unfamiliar ending means an irregular word — -uri is the perfectly regular neuter plural:

❌ treni / trene (for 'trains')

Incorrect — tren is neuter; its regular plural is trenuri.

✅ trenuri

trains

Key Takeaways

Plural endings are few — -i (masculine), -e / -i (feminine), -uri / -e (neuter) — but the stem alternation is the real work.
There is no -s plural in Romanian; never transfer it from English.
Learn the alternation families: consonants d→z, t→ț, s→ș (masculine), vowels a→e, a→ă, oa→o (feminine/neuter).
The alternations are systematic, not random — they're the historical effect of front vowels (-i, -e) pulling on the stem.
Workflow: check gender → pick the ending → apply the stem change. The dedicated pages drill each gender in turn.

Now practice Romanian

Reading grammar gets you part of the way. The exercises are where it sticks — free, no signup needed.

Start learning Romanian→