maneo

Maneo, manere, mansi, mansum is second conjugation. Intransitively it is the plain "stay, remain, last": manere in urbe, and of things rather than people, "hold good" - pactum manet, the agreement stands.

The sense worth drilling is the transitive one. With an accusative, maneo means "await", and the subject is usually something you would rather not meet: omnes mors manet, "death awaits everyone". Read that as "death remains for everyone" and you have the grammar backwards. The compounds are permaneo, "stay right through", and remaneo, "stay behind"; the participle mansurus gives "lasting", and through Old French the noun manere hands English both "manor" and "mansion", which were originally just a place where someone stayed.