noun which may take the genitive case particle 'no', noun
off-topic; not relevant to the thread
Internet slang abbreviation of スレ違い (surechigai). Used on forums and social media to point out that a post is off-topic or doesn't belong in the current thread.
See also: スレ違い
その話題はスレチだから、別のスレでやってください。
That topic is off-topic, so please take it to another thread.
スレチな書き込みは削除されることがある。
Off-topic posts may be deleted.
Abbreviation of スレ違い (surechigai), literally 'thread-crossing', used in online forums to mean 'off-topic'.