en.wiktionary.orgcái tôi - Wiktionary, the free dictionary From Wiktionary, the free dictionary From cái (“general classifier”) + tôi (“I; me”), calque of Latin ego (“I”), likely via a modern European philosophy. (Hà Nội) IPA(key): [kaːj˧˦ toj˧˧] (Huế) IPA(key): [kaːj˨˩˦ toj˧˧] (Saigon) IPA(key): [kaːj˦˥ toj˧˧] cái tôi an ego Synonym: bản ngã