Abstain rhymes with:
chastain, costain, mustain, stain, sustain, aquitaine, ascertain, attain, brattain, buntain, butane, chastain, contain, costain, detain, entertain, fontaine, fountaine, lafountain, lafountaine, lamontagne, maintain, mustain, obtain, partain, pertain, petain, retain, sartain, stain, sustain, uptain
Abstain sounds like:
abston, affectation, affection, avocation