Words That Rhyme With "Instalment" :
2 syllables:
ailment, almon, almond, bailment, Belmont, callant, dahlen, Elmont, fallen, galant
3 syllables:
befallen, befoulment, concealment, congealment, defilement, derailment, despoilment, embroilment, enrollment, enrolment, enthrallment, fulfillment, fulfilment, impalement, revealment, revilement