"nagging" 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"
"nagging" in the adjective sense
1. shrewish, nagging
continually complaining or faultfinding
"a shrewish wife"
"nagging parents"
Source: WordNet® (An amazing lexical database of English)
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