2 Syllables: SU
christened, Christian, Clifton, difference, different, distance, distant, dition, driven, fission, given, glistened, Islam, ism, kitchen, Lisbon, listen, lithium, miscreant, mission, pigeon, piston, prism, prison, rhythm, Richmond, risen, riven, schism, Scythian, stiffen, striven, system, Titian, Tristram, vision, Vivian, wisdom
3 Syllables: USU
abridgment, addition, admission, ambition, arisen, assistance, assistant, attrition, cognition, collision, commission, condition, consistence, consistent, contrition, decision, deficient, deliverance, derision, division, edition, efficient, Elysian, Elysium, emission, enlistment, enrichment, envision, excision, existence, existent, forgiven, Franciscan, fruition, ignition, imprison, incision, indifference, indifferent, insistence, insistent, logician, magician, munitions, musician, nutrition, oblivion, omission, omniscience, omniscient, Parisian, partition, patrician, perdition, permission, persistence, persistent, petition, physician, position, precision, proficient, provision, religion, remission, rendition, resistance, resistant, revision, sedition, submission, subsistence, sufficient, suspicion, technician, tradition, transition, transmission, tuition, unchristian, volition
4 Syllables: UUSU
abolition, acquisition, admonition, ammunition, apparition, beneficent, circumcision, coalition, coefficient, coexistence, competition, composition, definition, demolition, deposition, disposition, disquisition, ebullition, electrician, equidistant, erudition, exhibition, expedition, exposition, imposition, inconsistent, indecision, inefficient, inhibition, Inquisition, insufficient, intermission, intuition, irreligion, malnutrition, nonexistent, opposition, politician, precondition, premonition, preposition, prohibition, proposition, recognition, reminiscence, reminiscent, repetition, requisition, rhetorician, statistician, superstition, supervision, supposition, transposition
5 Syllables: UUUSU
academicians, decomposition, indisposition, interposition, juxtaposition, mathematician, metaphysician, predisposition, presuppositions, superposition
Found 183 words across 4 groupings. Skipped 85 excess words of a similar stem.