Synonyms of complaining

1 Syllable

keens, plaint

2 Syllables

grousing, grumbling, fretful, peevish, whiny, grumbly, whining, kvetching, putout, fretting, quibbling, ennuied, fed-up, put-out, charging, mourning, keening, waspy, moaning, weeping

3 Syllables

bellyaching, regretting, critical, petulant, dissenting, malcontent, resentful, protesting, accusing, bewailing, murmuring, querulous, censorious, deploring, unsated, lamenting, repining

4 Syllables

disappointed, dissatisfied, discontented, irritable, culpatory, lamentations, lamentation, unappeased, malcontented, unassuaged, disapproving, ungratified, ill-humored

6 Syllables

oversensitive