見けん当とうもつかない

expression

having not the slightest idea; can't even guess

Used when one has absolutely no clue or estimate about something. Often follows a question word or a noun phrase.

See also: 見当がつかない

• 彼かれがどこに行いったのか、見けん当とうもつかない。

  I have no idea where he went.

• この問もん題だいの答こたえは見けん当とうもつかない。

  I can't even guess the answer to this problem.