Capire ("to understand") is one of the first verbs every learner needs and one of the most frequent verbs in spoken Italian. The phrase non capisco ("I don't understand") is something you will say a hundred times in your first weeks. Capire is also the textbook example of an -isco -ire verb: it shows the pattern in its purest form, and once you can conjugate capire you can conjugate hundreds of other verbs in the same family.
The conjugation
Capire belongs to the -isco subgroup of -ire verbs. The signature is an -isc- infix that appears in four of the six forms — io, tu, lui/lei, loro — but not in noi or voi, which keep the plain stem.
| Person | Conjugation | Stress |
|---|---|---|
| io | capisco | capìsco |
| tu | capisci | capìsci |
| lui / lei / Lei | capisce | capìsce |
| noi | capiamo | capiàmo |
| voi | capite | capìte |
| loro | capiscono | capìscono |
Non capisco una parola di quello che stai dicendo.
I don't understand a word of what you're saying.
Capisci? — Sì, capisco.
You get it? — Yes, I get it.
Mia nonna non capisce il dialetto siciliano.
My grandmother doesn't understand the Sicilian dialect.
Non capiamo perché abbia detto così.
We don't understand why he said that.
Capite l'inglese tutti?
Do you all understand English?
I bambini non capiscono ancora bene il sarcasmo.
Kids don't yet really understand sarcasm.
Pronunciation: the trap of /sk/ vs /ʃ/
The digraph sc in Italian represents two different sounds depending on what vowel follows. This matters enormously in capire's conjugation, because both sounds appear in the same paradigm.
| Form | Spelling | Pronunciation | Sound |
|---|---|---|---|
| io | capisco | ka-PIS-ko | hard /sk/ (before -o) |
| tu | capisci | ka-PI-shi | soft /ʃ/ (before -i) |
| lui / lei | capisce | ka-PI-she | soft /ʃ/ (before -e) |
| loro | capiscono | ka-PIS-ko-no | hard /sk/ (before -o) |
So as you cycle through the four -isco forms, the sound shifts: /sk/ in io, /ʃ/ in tu, /ʃ/ in lui, then back to /sk/ in loro. This is automatic — it's the same rule that governs scuola (/ˈskwɔla/, hard) vs sciare (/ʃiˈare/, soft) — but English speakers have to drill it actively because there's no comparable digraph in English.
Stress: the loro form
Unlike pure -ire verbs, where the loro form stresses the root (dòrmono, sèntono), the loro form of -isco verbs stresses the -i- of the -isco infix: capìscono, not càpiscono and certainly not capiscòno.
The stress pattern across the conjugation is:
- cap-Ì-sco, cap-Ì-sci, cap-Ì-sce, capi-À-mo, cap-Ì-te, cap-Ì-scono
In four of the six forms (the -isc- forms plus voi), the stress lands on -i- of the verb. Only noi and the absence of stress shift in capìscono are worth thinking twice about. For the wider story of stress in Italian conjugations, see stress patterns in conjugations.
Auxiliary in compound tenses: avere
Capire is transitive (you understand something) and takes avere in compound tenses. The participio passato is regular: capito.
Ho capito tutto, grazie.
I got it all, thanks.
Non ho capito bene la domanda, puoi ripetere?
I didn't quite get the question, can you repeat it?
Hai capito cosa intendeva dire?
Did you understand what he meant?
The phrase ho capito ("got it" / "I understand now") is used constantly in conversation as an acknowledgment, similar to English "I see" or "got it." Italians say it more often than English speakers say either of those.
Capire vs sapere vs conoscere
This is where English speakers most need a map. English uses to know and to understand loosely — I know Italian, I understand Italian, I speak Italian are nearly interchangeable in casual speech. Italian draws sharper lines.
| Verb | Domain | Test |
|---|---|---|
| capire | understanding meaning, ideas, language input | "I get it" / "I follow" |
| sapere | knowing facts, information, how to do something | "I know that..." / "I know how to..." |
| conoscere | being acquainted with people, places, works | "I'm familiar with..." / "I know (a person)" |
For languages, all three can apply but mean different things:
- Capisco l'italiano = I understand Italian (when I hear it). Talks about comprehension.
- So l'italiano = I know Italian (I have command of it). Talks about competence.
- Conosco l'italiano = I'm acquainted with Italian. Less commonly used; suggests familiarity rather than skill.
In practice, native speakers usually say parlo l'italiano for active competence and capisco l'italiano for passive comprehension. So l'italiano is grammatical but uncommon.
Capisco l'italiano abbastanza bene, ma lo parlo poco.
I understand Italian fairly well, but I don't speak it much.
Sai dove abita Marco?
Do you know where Marco lives?
Conosci Marco?
Do you know Marco? (have you met him)
Sai parlare francese?
Do you know how to speak French? (can you)
The general rule: capire = mental processing of meaning, sapere = factual or skill knowledge, conoscere = acquaintance. For deeper treatment, see sapere and conoscere.
Capire + di + infinitive
Capire often combines with di + infinitive to mean "to realize that one is doing something":
Capisco di non avere abbastanza esperienza.
I realize I don't have enough experience.
Capisce di avere sbagliato, ma non lo ammette.
He realizes he was wrong, but he won't admit it.
This construction shifts the meaning from comprehending external input to becoming aware of one's own situation. Without di, the same idea uses a finite clause: capisco che non ho abbastanza esperienza.
Capire + che + clause
To say "I understand that..." with a full clause, use capire che + indicative or subjunctive:
Capisco che sei stanco, ma dobbiamo finire stasera.
I get that you're tired, but we have to finish tonight.
Non capisco perché tu sia ancora arrabbiato.
I don't understand why you're still angry.
When capire is affirmative and refers to a fact, use the indicative (capisco che sei stanco). When it's negative or interrogative and the truth of the embedded clause is in doubt, the subjunctive is preferred (non capisco perché tu sia arrabbiato). This is the standard mood-selection rule for verbs of perception in Italian.
Idioms and high-frequency phrases
Capire shows up in several fixed expressions that English speakers should recognize on sight:
| Phrase | Meaning |
|---|---|
| Hai capito? | Did you get that? / Got it? |
| Non ci capisco niente. | I can't make heads or tails of this. |
| Si capisce! | Of course! / Naturally! |
| Far(si) capire | To make oneself understood |
| Capirai! | Big deal! (sarcastic, informal) |
| Non capisco un'acca. | I don't understand a thing. (idiom) |
Si capisce che è stanca, ha lavorato tutto il giorno.
Of course she's tired — she's been working all day.
Riesco a farmi capire in italiano, più o meno.
I can make myself understood in Italian, more or less.
Di matematica non ci capisco niente.
I don't understand a thing about math.
Common mistakes
❌ Noi capisciamo bene l'italiano.
Incorrect — the -isc- infix never appears in noi. The form is capiamo.
✅ Noi capiamo bene l'italiano.
Correct — plain stem in noi.
❌ Voi capiscete l'italiano?
Incorrect — same rule. The voi form drops the infix: capite.
✅ Voi capite l'italiano?
Correct — capite, the plain -ire ending.
❌ Loro capischiono il problema.
Incorrect — capiscono, no h. The c is already hard before -o.
✅ Loro capiscono il problema.
Correct — c + o is /k/ automatically, no h needed.
❌ Lui capisci la lezione.
Incorrect — capisci is the tu form. The lui form is capisce.
✅ Lui capisce la lezione.
Correct — capisce in the third person singular.
❌ Conosco l'italiano molto bene.
Awkward — Italians don't typically say this. Use 'parlo' or 'capisco' depending on what you mean.
✅ Capisco l'italiano molto bene.
Correct — for passive comprehension.
❌ Loro capiscòno tutto.
Incorrect stress — the loro form stresses -ìsc-, not -ono.
✅ Loro capìscono tutto.
Correct — stress on the infix syllable.
❌ Ho capisciuto.
Incorrect — the participio passato is capito, not capisciuto.
✅ Ho capito.
Correct — regular -ire participle.
Key takeaways
Capire conjugates as capisco, capisci, capisce, capiamo, capite, capiscono — the textbook -isco -ire pattern. Three things to internalize:
The infix lives in 4 forms, not 6. Io, tu, lui, loro have -isc-; noi and voi don't.
The sound shifts inside the conjugation. /sk/ before -o (capisco, capiscono) and /ʃ/ before -i/-e (capisci, capisce). No extra letters needed — the rule is automatic.
Capire ≠ sapere ≠ conoscere. Capire is for understanding meaning and language; sapere is for facts and skills; conoscere is for acquaintance with people, places, and works.
To see the full template that capire follows, study the -isco -ire verbs page; many high-frequency verbs (finire, preferire, pulire, costruire) work the same way. To navigate the cluster of "knowing" verbs, compare sapere and conoscere side by side.
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Open the Italian course →Related Topics
- Presente Indicativo: OverviewA1 — How Italian's most-used tense covers everything English splits between simple present and present progressive — and why 'sto facendo' is not the default.
- Presente: -isco -ire VerbsA1 — How to conjugate the productive -isco subgroup of -ire verbs in the present indicative — the default pattern that covers the vast majority of -ire verbs you'll encounter.
- Presente: Sapere (to know)A1 — How to conjugate sapere in the present, why it competes with conoscere, and how its meaning shifts between tenses — the verb that splits English 'know' down the middle.
- Presente: Conoscere (to know / be acquainted with)A1 — How to conjugate conoscere, manage its sc/c spelling alternation, and choose it over sapere — the verb of acquaintance, familiarity, and meeting.
- Stress Patterns in Verb ConjugationsA2 — Where the stress falls in Italian conjugations — the silent rules that written Italian rarely marks but that instantly reveal a non-native speaker.