in-crēbro — Lewis & Short
in-crēbro, āvi, ātum, 1, v. n.,
I to do any thing frequently:
sin increbravit,but if he has frequently done it, has often visited his mistress, Plaut. Truc. 1, 1, 29 dub. (Speng.: sin crebras ducit; sc. noctes).