Here's what rhymes with nonperemptory.
peremptory Words that almost rhyme with nonperemptory
directory memory rectory peppery sensory treasury exemplary trajectory treachery jeopardy westerly celery plenary reverie beggary feathery leathery lechery century accessory rudimentary alimentary complimentary lethargy sedimentary refectory intercessory parliamentary documentary supplementary cleverly tenderly dispensary testamentary northwesterly uncomplimentary southwesterly penitentiary extrasensory plenipotentiary