Here's what rhymes with ungainful.
gainful painful baneful disdainful Words that almost rhyme with ungainful
shameful cable faithful grateful graceful cranial fateful hateful ungrateful gable unfaithful archangel baleful wakeful ungraceful pailful table unable fatal label naval racial basal facial nasal cradle fable glacial papal maple playful wasteful hazel natal navel sable ladle tasteful bagel plateful bacchanal laetrile pailsful enable stable spatial appraisal unstable staple nonracial singable flavourful felafel neonatal disgraceful disable palatial biracial nonfatal worktable relabel mislabel betrayal distasteful prenatal interracial interglacial reappraisal analysable defrayal portrayal postnatal metastable multiracial postnasal craniofacial reimbursable