Clothe, loathe (with "s" added rhymes "oaths;" though "clothes," the noun, in comic verse may rhyme with "snows," being colloquially spoken "clo's").
OU.
(As in "thou"), see OW. (As in "you"), see OO.
OUBT.
Doubt, see OUT.
OUC.
Caoutchouc, rhymes book.||
OUCH.
Couch, pouch, vouch, slouch,§ avouch, crouch.
OUCHE.