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