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