1) (of a person) difficult to please; quick to find fault (fastidious)
2) an old horse; to find fault with a person often (nag)
3) to find fault with (a person) (usually with a feeling of disappointment or sadness) (reproach)
to make unnecessary complaints about small matters
nag
to scold (a person); complain
criticize, lecture
to say that one is not satisfied, that something is wrong, that one is suffering
grumble about
to give a judgment of the quality of (something)
disapprove, judge as bad
a complaint or protest
complain
an old horse; to find fault with a person often
harass, bother
to make a protest; argue in protest
argue against