(an instance, example, of) complaining

statement of disagreement, discontent

(of speech, words etc) showing bad behaviour, a bad quality etc or one's low opinion; damaging a good reputation

offensive, uncomplimentary

too critical

very critical

unreasonably impatient or irritable

crabby, moody

full of complaints

grouchy, hard to please

irritable, testy

irritable, testy