Past Participle: Classes II and III (-ut, -s, -t) | Romanian Grammar

If Class IV (-it / -ât) and Class I (-at) are the well-behaved corners of the participle system, Classes II and III are where the trouble lives. Class II verbs end in -ea (a vedea, a putea) and Class III in -e (a merge, a scrie). Together they produce three different participle endings — -ut, -s, and -t — and you cannot reliably predict from the infinitive which one a given verb takes. This page lays out the patterns, the stem changes that come with them, and an honest warning: this is a memorization job. There is no rule that gets you from a merge to mers the way a citi mechanically gives citit.

The three endings at a glance

Ending	Typical of	Example infinitive	Participle
-ut	most Class II + many Class III	a vedea	văzut
-s	a subset of Class III	a merge	mers
-t	a smaller subset of Class III	a rupe	rupt

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The single most useful generalization: Class II verbs almost all take -ut. A vedea → văzut, a putea → putut, a tăcea → tăcut, a plăcea → plăcut. The real unpredictability is concentrated in Class III (the -e verbs), where all three endings compete.

The -ut participles

This is the default ending and the largest group. Many -ut participles also carry a stem consonant change inherited from Latin, so the participle is not just "infinitive minus ending plus -ut."

Infinitive	Meaning	Participle	Stem change
a vedea	to see	văzut	d → z
a putea	to be able	putut	none
a crede	to believe	crezut	d → z
a bea	to drink	băut	vowel shift e → ă
a cădea	to fall	căzut	d → z
a ține	to hold	ținut	none
a apărea	to appear	apărut	none

Notice the recurring d → z alternation: vedea → văzut, crede → crezut, cădea → căzut. This is the same alternation you meet in noun plurals (brad → brazi "fir tree(s)"), which is why a learner who internalizes it once can predict it across the language.

N-am văzut filmul, dar am citit cartea.

I haven't seen the film, but I've read the book.

Am crezut că glumești, scuze.

I thought you were joking — sorry.

A băut o cafea în picioare și a fugit la birou.

He drank a coffee standing up and rushed off to the office.

The -s participles

A large, common subset of Class III takes -s, almost always with a stem change. These are high-frequency verbs, so they are worth drilling first.

Infinitive	Meaning	Participle
a merge	to go	mers
a scrie	to write	scris
a duce	to carry, take	dus
a închide	to close	închis
a deschide	to open	deschis
a rămâne	to remain	rămas
a spune	to say	spus
a pune	to put	pus

The -s ending grows out of a Latin perfect in -s- (Latin clausit, dūxit), which is why the stem-final consonant collapses into the s: the -d- of a închide and a deschide disappears (închis, deschis), and the -g-/-c- of a merge and a duce gives way to it as well (mers, dus). The practical payoff is real: these participles double as nouns and adjectives that share the exact form — the noun mers ("gait, walk") is just the participle of a merge, and un drum închis ("a closed road") reuses închis unchanged.

Am mers pe jos până acasă, era o seară superbă.

I walked all the way home — it was a gorgeous evening.

Ți-am scris de trei ori, n-ai răspuns deloc.

I wrote to you three times — you didn't reply at all.

Au rămas la noi peste noapte, era prea târziu să plece.

They stayed over at our place — it was too late to leave.

Am închis ușa, dar am uitat geamul deschis.

I closed the door but left the window open.

The -t participles

A smaller set of Class III verbs takes -t, and these come with the most dramatic stem changes — often a p, pt, or rt cluster that looks nothing like the infinitive.

Infinitive	Meaning	Participle
a rupe	to tear, break	rupt
a coace	to bake	copt
a frige	to fry, roast	fript
a sparge	to smash	spart
a fierbe	to boil	fiert
a suge	to suck	supt

The leap from a coace to copt ("baked") and from a frige to fript ("fried/roasted") is severe — the infinitive's soft c/g hardens to p before the -t. There is no way to reconstruct this on the fly; it is pure memorization. The reward is that these participles double as everyday adjectives: pâine coaptă ("baked bread"), cartofi fierți ("boiled potatoes"), un geam spart ("a smashed window").

Am rupt plicul din greșeală înainte să-l citesc.

I tore the envelope by mistake before reading it.

Bunica a copt cozonac toată dimineața.

Grandma baked sweet bread all morning.

Cineva a spart geamul de la intrare azi-noapte.

Someone smashed the front window last night.

On guessing: don't

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There is no shortcut for the -s versus -t split, and no way to know whether a Class III verb takes -ut, -s, or -t from the infinitive alone. A merge → mers (-s) but a rupe → rupt (-t); a crede → crezut (-ut) but a închide → închis (-s). Learn each participle as a fixed pair with its infinitive. The good news is that the truly irregular ones number only a few dozen — see the frequent irregular participles reference.

Comparison with English

English speakers actually have an advantage here, because English also has a chaotic strong-verb system (sing/sung, write/written, break/broken) that resists rules. The mental habit you already have — "I just know that write becomes written" — is exactly the habit you need for Romanian Class III. The difference is that Romanian's alternations are more systematic than they first appear: the d → z of văzut/crezut and the c/g → pt of copt/fript recur predictably once you've seen a few. So treat the list as patterns to recognize, not as random noise.

Common Mistakes

❌ Am mergut pe jos.

Incorrect — a merge takes -s, not -ut: mers. *mergut does not exist.

✅ Am mers pe jos.

I walked.

❌ Ți-am scriut un mesaj.

Incorrect — a scrie takes -s: scris, not *scriut.

✅ Ți-am scris un mesaj.

I wrote you a message.

❌ Am vedut filmul aseară.

Incorrect — a vedea has the d → z stem change: văzut, not *vedut.

✅ Am văzut filmul aseară.

I saw the film last night.

❌ Am coacet pâine.

Incorrect — a coace becomes copt, with the c → pt hardening.

✅ Am copt pâine.

I baked bread.

Key Takeaways

Class II (-ea) verbs almost all take -ut (văzut, putut, plăcut), often with a d → z stem change.
Class III (-e) verbs split unpredictably among -ut, -s, and -t.
The -s and -t endings carry stem changes identical to those in noun plurals — recognizable, but not derivable from the infinitive.
Guessing the ending fails; memorize each participle with its infinitive, prioritizing the high-frequency ones.

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