استخبث

1.
[He deemed, or esteemed, خَبِيث, i. e. bad, &c.]. كَانَتِ العَرَبُ تَسْتَخْبِثُ مِثْلَ الحَيَّةِ وَالعَقْرَبِ [The Arabs used to deem impure, unclean, foul, or filthy, such as the serpent and the scorpion]. (Msb.)
2.
(tropical:) He deemed bad, or corrupt, a word, or a dialectic variant. (A, TA.)

Perseus ID: n9868