見けん当とう外はずれ

noun which may take the genitive case particle 'no', na-adjective, noun

off the mark; wrong guess; misdirected

Describes a guess, estimate, or direction that is completely wrong or misses the point. Often used with ～な, ～の, or as 見当外れだ.

See also: 見当違い

• 彼かれの予よ想そうは見けん当とう外はずれだった。

  His prediction was off the mark.

• 見けん当とう外はずれな答こたえをしてしまった。

  I gave a completely wrong answer.