Italian verb conjugation

occorrere

irregular
"must; to need; to be necessary, to occur, to happen" — irregular Italian verb

Indicative

PresentImperfectPast historicFuture
1st sg.occorrooccorrevooccorsioccorrerò
2nd sg.occorrioccorrevioccorrestioccorrerai
3rd sg.occorreoccorrevaoccorseoccorrerà
1st pl.occorriamooccorrevamooccorremmooccorreremo
2nd pl.occorreteoccorrevateoccorresteoccorrerete
3rd pl.occorronooccorrevanooccorserooccorreranno

Subjunctive

PresentImperfect
1st sg.occorraoccorressi
2nd sg.occorraoccorressi
3rd sg.occorraoccorresse
1st pl.occorriamooccorressimo
2nd pl.occorriateoccorreste
3rd pl.occorranooccorressero

Conditional

Present
1st sg.occorrerei
2nd sg.occorreresti
3rd sg.occorrerebbe
1st pl.occorreremmo
2nd pl.occorrereste
3rd pl.occorrerebbero

Imperative

Present
2nd sg.occorri
1st pl.occorriamo
2nd pl.occorrete

Non-finite

Infinitive
occorrere
Gerund
occorrendo
Past participle
occorso
Present participle
occorrente
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Conjugation data from Kaikki.org (extracted from English Wiktionary), licensed CC BY-SA 4.0.