書かき損そこない

noun

slip of the pen; mistake in writing

Refers to the act or result of making a writing error, such as a misspelling or wrong character.

See also: 書き損じ

• 手て紙がみに書かき損そこないがあったので、書かき直なおした。

  There was a slip of the pen in the letter, so I rewrote it.

noun

something ruined by a writing mistake

Often refers to a physical item like a postcard or form that is spoiled because of a writing error.

See also: 書き損じ

• 書かき損そこないの葉は書がきが何なん枚まいか出でた。

  I ended up with several postcards ruined by writing mistakes.