English

Definition of schmo noun from the Oxford Advanced Learner's Dictionary

 

schmo

 noun
(also shmo) noun
BrE BrE//ʃməʊ//
 
; NAmE NAmE//ʃmoʊ//
 
(pl. schmoes, shmos) (North American English, informal, disapproving)
 
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a person who is stupid or foolish in an annoying way Word Origin 1940s: alteration of schmuck.
See the Oxford Advanced American Dictionary entry: schmo