Where does “monstru” come from?

monstru (Romanian) comes from French monstre, from Middle French monstre, from Old French monstre, from Latin mōnstrum, from Proto-Italic monestrom.

monstru (Romanian): monster

Definitions

Step	Language	Word	Meaning
1	French	monstre	monster; hideous person, fiend; enormous
2	Middle French	monstre	monster
3	Old French	monstre	monster
4	Latin	mōnstrum	—
5	Proto-Italic	monestrom	—

monstru — Etymology, Origin & Word History | Etymology Explorer