Words That Rhyme With "Coextension" :
2 syllables:
Benson, Bentham, Brennan, cession, freshen, gentian, Gresham, Henson, hessian, Jensen, Jenson, Kennan, lengthen, Lennon, mansion, mention, penchant, pennon, pension, phenom, plenum, Pontian, scansion, sensum, sentience, sentient, session, sponsion, strengthen, tension, trenchant, venom
3 syllables:
accession, aggression, ascension, assentient, Asuncion, attention, compression, concession, confession, consentience, consentient, contention, convention, declension, degression, depression, descension, detention, digression, dimension, discretion, dissension, dissentient, distention, egression, envenom, expansion, expression, extension, impression, indention, ingression, intension, invention, obsession, obtention, oppression, possession, precession, prehension, presentient, pretension, prevention, procession, profession, progression, recension, recession, regression, repression, responsion, retention, secession, subvention, succession, suppression, suspension, sustention, transgression, unmentioned
4 syllables:
apprehension, circumvention, comprehension, condescension, contravention, decompression, hypertension, hypotension, indiscretion, intercession, intervention, misimpression, nonaggression, prepossession, reconvention, reimpression, reinvention, repossession, reprehension, retrogression, supersession, undermentioned
5 syllables:
circumincession, hyperextension, inapprehension, incomprehension, misapprehension, nonintervention, overexpansion