Nouns

(n)scold, scolder, nag, nagger, common scoldsomeone (especially a woman) who annoys people by constantly finding fault
(n)hack, jade, nag, plugan old or over-worked horse

Verbs

(v)nag, peck, hen-peckbother persistently with trivial complaints“She nags her husband all day long”
(v)nagworry persistently“nagging concerns and doubts”
(v)nagremind or urge constantly“she nagged to take a vacation”