KEPI Meaning of KEPI in English [ 'kɛpi , 'keɪpi ]■ noun ( plural ~s ) a French military cap with a horizontal peak.OriginC19: from Fr. képi , from Swiss Ger. Käppi , dimin. of Kappe 'cap'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004