2 Syllables: SU
christened, Christian, Clifton, Dickson, diction, dictum, difference, different, distance, distant, dition, Dixon, driven, fiction, fission, friction, given, glistened, gypsum, Islam, ism, kitchen, Lisbon, listen, lithium, miscreant, mission, Nixon, pigeon, piston, Pitman, prism, prison, rhythm, Richmond, risen, riven, schism, Scythian, shipment, sixpence, stiffen, striven, system, Titian, Tristram, vision, Vivian, Whitman, wisdom
3 Syllables: USU
abridgment, addiction, addition, admission, affliction, ambition, arisen, ascription, assistance, assistant, attrition, cognition, collision, commission, commitment, condition, conscription, consistence, consistent, constriction, contrition, conviction, decision, deficient, deliverance, depiction, derision, description, division, edition, efficient, Egyptian, Elysian, Elysium, emission, enrichment, envision, equipment, excision, existence, existent, forgiven, Franciscan, fruition, ignition, imprison, incipient, incision, indifference, indifferent, infliction, inscription, insistence, insistent, logician, magician, midshipman, munitions, musician, nutrition, oblivion, omission, omniscience, omniscient, Parisian, partition, patrician, perdition, permission, persistence, persistent, petition, physician, position, precision, prediction, prescription, proficient, proscription, provision, recipient, religion, remission, rendition, resistance, resistant, restriction, revision, sedition, submission, subscription, subsistence, sufficient, suspicion, technician, tradition, transcription, transition, transmission, tuition, unchristian, volition
4 Syllables: UUSU
abolition, acquisition, admonition, ammunition, apparition, benediction, beneficent, circumcision, coalition, coefficient, coexistence, competition, composition, contradiction, crucifixion, definition, demolition, deposition, dereliction, disposition, disquisition, ebullition, electrician, equidistant, erudition, exhibition, expedition, exposition, imposition, inconsistent, indecision, inefficient, inhibition, Inquisition, insufficient, intermission, intuition, irreligion, jurisdiction, malnutrition, nonexistent, opposition, politician, precondition, premonition, preposition, prohibition, proposition, recognition, reminiscence, reminiscent, repetition, requisition, rhetorician, statistician, superscription, superstition, supervision, supposition, transposition
5 Syllables: UUUSU
academicians, decomposition, indisposition, interposition, juxtaposition, mathematician, metaphysician, predisposition, presuppositions, superposition
Found 222 words across 4 groupings. Skipped 102 excess words of a similar stem.