خُبْثٌ

a verbal noun of خَبُثَ: (S, Mgh, Msb, K:) [used as a simple subst., it means Any of the qualities denoted by the epithet خَبِيثٌ, q. v., i. e. badness, &c.:] and ↓ خِبِّيثَى signifies the same: (K:) or this is a subst. from أَخْبثَ meaning “ he had a bad, wicked, or deceitful, family; ” (TA;) and signifies the state of having bad, wicked, or deceitful, companions or friends or connexions: (L:) ↓ خَابِثَةٌ, also, is synonym with [خُبْثٌ, and so is] ↓ خَبَاثَةٌ, (K,) [for] this last is another verbal noun of خَبُثَ, like خُبْثٌ, (S, Mgh, K,) or it is a simple subst. (Msb.) [Hence,] the first particularly signifies (tropical:) Adultery, or fornication. (K, TA.) See also خَبِيثٌ, in three places.