Answer: moaner

AnswerCrossword Clue
MOANERPessimist
moanerone who moans (to utter a low, mournful sound)
MOANERNag e.g.
MOANERSelf-pitying one
MOANERWhiny type
MOANERClearly unhappy person
MOANERKvetcher
MOANEROne who's suffering
MOANEROne who keens
MOANERLugubrious one
MOANERMalcontent
MOANERBewailer.
MOANERComplainer.
MOANERKvetch
MOANEROne in pain
MOANERCrybaby
MOANERPunster's prey, perhaps
MOANERComplainer
MOANERBellyacher