ALTER EGO Meaning of ALTER EGO in English [ ˌaltər'ɛgəʊ , ˌɒlt- , 'i:g- ]■ noun1》 a person's secondary or alternative personality. 2》 a close friend who is very like oneself.OriginC16: L., 'other self'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004