Here's what rhymes with undefendable.
dependable undependable spendable bendable expendable amendable extendable commendable recommendable Words that almost rhyme with undefendable
preventable preventible unpreventable presentable quenchable lamentable unquenchable sensible defensible insensible tenable indefensible dispensable inedible weldable medical terrible cerebral dimensional flexible indispensable vegetable amenable credible parable sectional sensual seminal illegible ineffable legible ostensible sentinel bearable execrable extensible wearable spreadable chemical accessible exceptional festival incredible decimal intentional perceptible retinal comprehensible detectable inflexible pedestal sceptical segmental untenable attentional detestable impeccable reprehensible delectable extensional testable undetectable caramel tentacle repairable breathable perfectible pentacle perceptional stretchable detectible electable professional conventional acceptable clerical perceptual respectable spectacle susceptible inaccessible plentiful skeptical textual unacceptable directional unbearable unconventional correctional impregnable polemical regrettable trigeminal unforgettable unintentional chimerical compressible digestible expressible inflectional obsessional unprofessional processional prophetical correctable impressible unexceptional forgettable inflexional premedical recessional suppressible unwearable numerical hypothetical intestinal biochemical confessional receptacle irrepressible alchemical bidirectional geochemical indigestible intracerebral twodimensional anticlerical concessional nonprofessional collectible insusceptible paramedical suggestible collectable conceptional convectional comestible connectable connectible congressional heterosexual homosexual multidimensional inexpressible histochemical incompressible intertextual photochemical psychosexual threedimensional contestable subprofessional complexional nonclerical nonnumerical contemptible unidirectional incontestable physicochemical semiprofessional noncollectable paraprofessional alphanumerical gastrointestinal immunohistochemical