From BiblePortal Wikipedia

Vine's Expository Dictionary of NT Words [1]

A — 1: Ἀφρίζω (Strong'S #875 — Verb — aphrizo — af-rid'-zo )

denotes "to foam at the mouth" (akin to aphros, "foam;" see B.),  Mark 9:18,20 .

A — 2: Ἐπαφρίζω (Strong'S #1890 — Verb — epaphrizo — ep-af-rid'-zo )

"to foam out, or up" (epi, "up," and No. 1), is used metaphorically in  Jude 1:13 , of the impious libertines, who had crept in among the saints, and "foamed" out their own shame with swelling words. The metaphor is drawn from the refuse borne on the crest of waves and cast up on the beach.

B — 1: Ἀφρός (Strong'S #876 — Noun Masculine — aphros — af-ros' )

"foam," occurs in  Luke 9:39 , where it is used with the preposition meta, "with," lit., "(teareth him) with (accompanied by) foam."

Webster's Dictionary [2]

(1): ( n.) To form foam, or become filled with foam; - said of a steam boiler when the water is unduly agitated and frothy, as because of chemical action.

(2): ( n.) The white substance, consisting of an aggregation of bubbles, which is formed on the surface of liquids, or in the mouth of an animal, by violent agitation or fermentation; froth; spume; scum; as, the foam of the sea.

(3): ( n.) To gather foam; to froth; as, the billows foam.

(4): ( v.t.) To cause to foam; as,to foam the goblet; also (with out), to throw out with rage or violence, as foam.

King James Dictionary [3]

FOAM, n. L. fumo, to smoke, to foam.

Froth spume the substance which is formed on the surface of liquors by fermentation or violent agitation, consisting of bubbles.


1. To froth to gather foam. The billows foam. A horse foams at the mouth when violently heated. 2. To be in a rage to be violently agitated.

He foameth and gnasheth with his teeth.  Mark 9 .

FOAM, To throw out with rage or violence with out.

Foaming out their own shame.  Jude 1:13 .

Wilson's Dictionary of Bible Types [4]

 Hosea 10:7 (a) This is a symbol of the lightness, frivolity and worthlessness of many of earth's great men, as GOD viewed their lives.

 Judges 1:13 (a) This type describes the expressions of the ungodly in word and action. They make a great noise and a great appearance, and then subside into silence and oblivion.

Easton's Bible Dictionary [5]

 Hosea 10:7 Ketseph

International Standard Bible Encyclopedia [6]

fōm ( קצף , ḳeceph ( Hosea 10:7 ); ἀφρός , aphrós ( Luke 9:39 ), ἀφρίζω , aphrı́zō ( Mark 9:18 ,  Mark 9:20 ), ἐπαφρίζω , epaphrı́zō ( Jude 1:13 )): Ḳeceph from ḳācaph , "to break to pieces," or "to break forth into anger," "to be angry," occurs often in the sense of "wrath" or "anger" (e.g.  Numbers 1:53;  Psalm 38:1 , etc.), and in this passage has been rendered "twigs" or "chips," "As for Samaria, her king is cut off, as foam (the Revised Version, margin "twigs") upon the water" ( Hosea 10:7 ). The other references are from the New Testament. In Jude, evil-doers or false teachers are compared to the "wild waves of the sea, foaming out their own shame." In Mark and Luke the references are to the boy with a dumb spirit who foamed at the mouth.

Cyclopedia of Biblical, Theological and Ecclesiastical Literature [7]

occurs as a translation of קֶצֶ (Ke'Tseph, something Broken): in  Hosea 10:7, "As for Samaria, her king is cut off as the foam upon the water," after the Vulg. spuma. The Sept. doubtless gives the correct sense, Φρύγανον , a dry Twig or splinter. Horsley (Comment. in loc.) renders "bubble."

"Foam" is the true meaning of Ἀφρός , Froth ( Luke 9:39; with its derivatives in  Mark 9:18;  Mark 9:20;  Judges 1:13).