This is the 865th most frequent Romanian word.
petrecut
"Petrecut" means "spent" or "occurred" in English, depending on context.
In this case, 'petrecut' is part of a reflexive verb phrase 's-a petrecut,' denoting an event occurring.
Tot ce s-a petrecut ieri a fost neașteptat.
Everything that happened yesterday was unexpected.
Here, 'petrecut' is used as an adjective derived from the past participle, describing the nature of the moment as being spent peacefully.
A fost un moment petrecut în liniște.
It was a moment spent in silence.
Here, 'petrecut' is used as the past participle of the verb 'a petrece' (to spend), indicating that the subject has spent time.