"nags" in the noun sense
1. scold, scolder, nag, nagger, common scold
someone (especially a woman) who annoys people by constantly finding fault
2. hack, jade, nag, plug
an old or over-worked horse
"nags" in the verb sense
1. nag, peck, hen-peck
bother persistently with trivial complaints
"She nags her husband all day long"
"nagging concerns and doubts"
remind or urge constantly
"she nagged to take a vacation"
Source: WordNet® (An amazing lexical database of English)
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