adjectival nouns or quasi-adjectives (keiyodoshi)nouns which may take the genitive case particle 'no'noun (common) (futsuumeishi)confident;assured;self-assured;firm;strong;cocksure
あまり強気になるなよ。
Don't press your luck, kid.
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adjectival nouns or quasi-adjectives (keiyodoshi)nouns which may take the genitive case particle 'no'noun (common) (futsuumeishi)stock marketbullish