(As in "choir"), rhymes IRE, but the foreign sound, as in "devoir," "reservoir," is nearer AR, but must not be so rhymed. "Coir" is a dissyllable.
OISE.
Poise, noise, counterpoise, equipoise, etc., and the plurals of nouns and third persons singular present tense of verbs in OY. ["Turquoise" would rhyme with plurals of AH, etc.]
OIST.
Hoist, moist, foist,§ the preterites and participles of verbs in OICE.
OIT.
Doit,§ exploit, adroit, quoit, etc.
OKE.
Broke, choke, smoke, spoke, stroke, yoke, bespoke, invoke, provoke, revoke, cloak, oak, soak.
OL.