Ugh rhymes with:
antidrug, bug, bugg, bugge, chug, debug, doug, drug, dug, hug, hugg, jug, klug, krug, lug, mug, plug, pug, rug, rugg, schug, shrug, slug, smug, snug, sugg, thug, tug, unplug, zug
Ugh sounds like:
u's, u.'s, u.s, ucci, ueki, ukase, us, usa, usage, usages, use, usec, uses, uss, uys, uzi, uzis