The definition of uncouth is awkward, clumsy or uncultured.(adjective)
An example of uncouth is a person who says embarrassing things about others at gatherings.
See uncouth in Webster's New World College Dictionary
Origin: ME < OE uncuth, unknown < un-, not + cuth, pp. of cunnan, to know: see can
See uncouth in American Heritage Dictionary 4
Origin: Middle English, unknown, strange
Origin: , from Old English uncūth
Origin: : un-, not; see un-1
Origin: + cūth, known; see gnō- in Indo-European roots.
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