noun
wrong category; miscategorized
Colloquial abbreviation of カテゴリー違い. Used when something is placed in the wrong category, especially in online forums, social media, or informal classification contexts.
その投稿はカテ違いだから、適切な板に移動してください。
That post is in the wrong category, so please move it to the appropriate board.
カテ違いの質問をしてしまってすみ
Sorry for asking a question in the wrong category.
The full, more formal form. カテ違い is a casual abbreviation used mainly in online communities.
Abbreviation of カテゴリー違い (category mistake). カテ is a clipping of カテゴリー, and 違い means 'difference' or 'mistake'.