n.
Pronunciation: ' kl ə ts
Function: noun
Etymology: Yiddish klots, literally, wooden beam, from Middle High German kloz lumpy mass ― more at CLOUT
Date: 1960
: a clumsy person
– klutz · i · ness \ ' kl ə t-s ē -n ə s \ noun
– klutzy \ ' kl ə t-s ē \ adjective