お堅かたい

i-adjective

prudish; strait-laced; square; boring

Colloquial adjective describing a person or atmosphere that is overly serious, rigid, or lacking in fun. Often used for someone who is strict about rules or conventional morals.

• 彼かれはお堅かたい人ひとで、冗じょう談だんが通つうじない。

  He's a strait-laced person who doesn't get jokes.

• あの会かい社しゃはお堅かたい雰ふん囲い気きで、自じ由ゆうな服ふく装そうは許ゆるされない。

  That company has a stuffy atmosphere and doesn't allow casual clothes.