a primitive root; also as denominative (from H2564) properly, to boil up; hence, to ferment (with scum); to glow (with redness); to smear with pitch:—daub, befoul, be red, trouble.
Outline
to boil, foam, foam up, ferment
(Qal) to boil, foam up
(Poalal) to be troubled, be in turmoil
(Poalal) to be reddened
(Qal) to daub, seal up, cover or smear with asphalt