Here's what rhymes with underambitious.
ambitious vicious auspicious suspicious delicious judicious malicious pernicious nutritious propitious seditious avaricious factitious officious unambitious unpropitious fictitious capricious adventitious injudicious repetitious surreptitious superstitious expeditious Words that almost rhyme with underambitious
dishes fishes kisses misses militias bishops business digits tickets pickets bigness billets dimness discus pittance bigots cirrus distance appearance minutes limits spirits witness thickness fitness sickness prodigious richness stiffness stillness bacillus biscuits citrus fearless viscous grimace litmus papyrus thickets hillocks indigence pivots sinless sinuous unfitness religious visits adherence clearance disappearance mistress inhibits admittance brilliance pigments prestigious archbishops assiduous diffidence eyewitness frigates listless meniscus quickness reappearance rivets trinkets crickets cystitis irreligious remittance triplets assistance interference exhibits forgiveness insistence persistence adherents coherence shipments hindrance prohibits contingents elicits strictness swiftness consistence resistless transmittance existence resistance coefficients assistants commitments subsistence perseverance reminiscence eucalyptus incoherence delinquents distinctness coexistence infringements nonexistence