Strong's #875: aphrizo (pronounced af-rid'-zo)
from 876; to froth at the mouth (in epilepsy):--foam.
Thayer's Greek Lexicon:
̓́
aphrizō
1) to foam
Part of Speech: verb
Relation: from G876
Usage:
This word is used 2 times:
Mark 9:18: "him, he teareth him: and he foameth, and gnasheth with his"
Mark 9:20: "ground, and wallowed foaming."