kvetch \kvech\ (verb intr.) - To complain habitually, whine; gripe. (noun) 1 : A chronic complainer. 2 : A complaint.
"A chronic curmudgeon, Jason was liable to kvetch regardless of the weather making him a kvetch for all seasons."
From Yiddish kvetshn (squeeze, pinch, complain), from Middle High German quetschen (to squeeze).