complainer

1 a person who makes frequent complaints usually about little things she early on got a reputation as a complainer after finding fault with her work space Synonyms baby, bellyacher, crybaby, fussbudget, fusser, fusspot, griper, grumbler, kvetch, kvetcher, sniveler, whinerRelated Words bawler, bleater, moaner, screamer, squawker, wailer, weeper; crab, grump, malcontentNear Antonyms happy camper

2 an irritable and complaining person a chronic complainer Synonyms bear, bellyacher, grouch, crab, crank, croaker, crosspatch, curmudgeon, fusser, griper, grouser, growler, grumbler, grump, murmurer, mutterer, sourpuss, whinerRelated Words hunks; malcontent, sorehead; grinch, killjoy, party pooper, spoilsport; defeatist, pessimist; faultfinder, kicker, nagger, nitpicker, objector, quibbler, repiner; crock [slang], hypochondriacNear Antonyms optimist, Pollyanna; happy camper