griper

1 a person who makes frequent complaints usually about little things a petty griper who drove us nuts with his merciless nitpicking Synonyms baby, bellyacher, complainer, fussbudget, fusser, fusspot, crybaby, 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 driving across the country in four days would make anyone a confirmed griper Synonyms bear, bellyacher, complainer, crab, crank, croaker, crosspatch, curmudgeon, fusser, grouch, 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