Here's what rhymes with illnessess.
assess less possess guess yes mess chess reassess success press stress unless dress bless confess profess recess caress finesse oppress abbess impress nonetheless suppress redress repress coalesce undress abs authoress egress largesse express nevertheless distress acquiesce depress transgress Words that almost rhyme with illnessess
says chef death fresh flesh deaf mesh rev afresh ref neath breath refresh cortege sense sex hence sets offence thence fence offense chefs hex vex steps gets affects cents deaths debts dense helps whence checks scarce tense threats lets necks nets sects decks jets pence pets bets flex scents specks steppes upsets vents wrecks cassettes refs reps sweats thefts vests effects events tests defence defense depths guests immense rests accepts rents arrests belts commence convex incense nests suspense tents breaths chests desks epithets forgets melts pests temps tenths attests cadets adepts dents jests pelts rosettes attempts expense intense texts breasts lengths cigarettes connects directs dispense manifests suspects bayonets collects regrets selects clefts commonsense condense consents corrects crests elects intersects invests laments alphabets begets codex descents digests ferments infects intercepts invents minarets parapets perplex quests resents silhouettes tempts vignettes suggests represents reflects respects prevents requests strengths architects dialects expects protects rejects neglects pretense recompense detects intellects intents sixpence extents statuettes transepts presidents bequests bottlenecks circumflex commonwealths multiplex penitents quadriceps quartets tempests discontents malcontents