知しったかぶり屋や

noun, noun which may take the genitive case particle 'no'

know-it-all; someone who pretends to know

Colloquial term for a person who acts as if they know something when they actually don't, often used critically or humorously.

• 彼かれはいつも知しったかぶり屋やで、本ほん当とうは何なにも知しらないくせに詳くわしいふりをする。

  He's always a know-it-all, pretending to be knowledgeable when he actually knows nothing.

• 知しったかぶり屋やの意い見けんはあてにならない。

  You can't rely on the opinions of a know-it-all.