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