Shirabe
自信過剰

自信じしん

Common Noun family or surname
English jmdict
1
noun (common) (futsuumeishi) self-confidence;confidence (in oneself)
君は自分が申し立てていることに自信がありますか。
Are you sure of your facts?
English jmnedict
1
Jishin
English jmdict
1
noun (common) (futsuumeishi)adjectival nouns or quasi-adjectives (keiyodoshi)nouns which may take the genitive case particle 'no' overconfident;presumptuous
自信過剰にならないよう注意しなくてはいけない。
You should beware of overconfidence.