Synonyms of 'cavil'
This is not the time to cavil about petty details.
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If someone beefs about something, they keep complaining about it.
She was beefing about what he had done.
If you say that someone is carping, you mean that they keep criticizing or complaining about someone or something, especially in a way you think is unnecessary or annoying.
His wife is constantly carping at him about his drinking.
If you complain about a situation, you say that you are not satisfied with it.
She's always complaining about her husband's laziness.
Thesaurus for cavil from the Collins English Thesaurus
If you say that someone cavils at something, you mean that they make criticisms of it that you think are unimportant or unnecessary .