to make unnecessary complaints about small matters

nag

to say that one is not satisfied, that something is wrong, that one is suffering

grumble about

(an instance, example, of) complaining

statement of disagreement, discontent

to stay out of the way of (a bad person or thing)

get away from

a false or mistaken belief; false reasoning or argument

illusion, misconception

to argue

bicker, quarrel

a statement or conclusion that does not (seem to) have any connection to what was said or written before

fallacy

a statement or feeling of dislike, disapproval or opposition

argument, disagreement

to make untrue or partly untrue statement (to avoid telling the (whole) truth)

deceive; stretch the truth

a serious or formal declaration

objection

an attempt to avoid an honest answer by using a secondary or doubtful meaning of a word or phrase; to argue about small points or differences

objection, complaint

to blame (a person) with angry words

find fault with