gripe

ɡrʌɪp

verb

complain about something in a persistent, irritating way.

it’s no use griping about your boss or your pay

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noun

a minor complaint.

my only gripe is the size of the page numbers

complaint,grumble,moan,groan,grievance,objection,protest,whine,cavil,quibble,niggle,grouse,beef,bellyaching,beefing,bitching,grouching,whinge,whingeing,kvetch