We found one dictionary that defines the word know something:

Miscellaneous (1 matching dictionary)

1. know something: Idioms

Phrases: you know something, know something inside out, I Know There's Something Going On, want to know something, i know something you don't, more... ▸ Words similar to know something ▸ Usage examples for know something ▸ Idioms related to know something ▸ Wikipedia articles (New!) ▸ Words that often appear near know something ▸ Rhymes of know something ▸ Invented words related to know something