Here's what rhymes with pyrethrum.
some sum thumb hum zum sm thrum from come cum dem comme dumb gum rum slum bum comm dum mum même num numb scum tum chum tem swum sebum spume yum drum plum succumb plumb crumb trom glum scrum strum become overcome sacrum benumb frustum cerebrum breadcrumb simulacrum candelabrum Words that almost rhyme with pyrethrum
son sun fun hung sung shun sion fon cen hun ven one done young run none won gun tongue lung tion flung swung ton nun spun dung rung slung stung wrung bun donne dun pun rien tung bn fron gon jun kung seisin tonne tun yean bung stun unsung naan rehung among clung sprung strung undone spline rerun redone toucan anyone begun overrun outdone outrun overdone overhung misdone everyone cretonne twentyone