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