Here's what rhymes with protractible.
contractible Words that almost rhyme with protractible
tactical irascible tragical classical magical graphical fanciful tyrannical fascicle theatrical botanical dynamical fanatical problematical sabbatical pragmatical monastical mechanical geographical biographical neoclassical fantastical expansible satanical ecclesiastical mathematical topographical biomechanical puritanical typographical systematical bibliographical nontheatrical autobiographical electromechanical historiographical lexicographical