"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"
2. nag
worry persistently
"nagging concerns and doubts"
3. nag
remind or urge constantly
"she nagged to take a vacation"
Source: WordNet® (An amazing lexical database of English)
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