自己じこ Common Noun Noun English jmdict 1 noun (common) (futsuumeishi)nouns which may take the genitive case particle 'no' self;oneself 彼は自己を没却する男ではない。 He knows how to assert himself.
自己韜晦じことうかい Noun Irregular English jmdict 1 noun (common) (futsuumeishi) noun or participle which takes the aux. verb suru yojijukugo concealing one's talents, position, status, intentions, etc.