COMPLAINER

whiner, complainer, moaner, sniveller, crybaby, bellyacher, grumbler, squawker

(noun) a person given to excessive complaints and crying and whining

Source: WordNet® 3.1

Etymology

Noun

complainer (plural complainers)

One who complains, or is known for their complaints.

Synonyms

• grumbler

• squeaky wheel

• See also complainer

Anagrams

• microplane

Source: Wiktionary

Com*plain"er, n.

Definition: One who complains or laments; one who finds fault; a murmurer. Beattie. Speechless complainer, I will learn thy thought. Shak.

Source: Webster’s Unabridged Dictionary 1913 Edition