Here's what rhymes with pentabarbitone.
bone tone atone known alone shown stone zone loan phone blown cone prone shone lone mon sown drone moan sewn hone roan grown thrown unknown throne flown acetone clone groan cortisone baritone condone disown peptone trombone undertone bemoan cologne crone outshone overtone collarbone intone scone underdone payphone spumone telephone cornerstone postpone aldosterone methadone outgrown monotone chaperone cobblestone dethrone overblown semitone ingrown unbeknown hipbone regrown resewn resown overgrown overthrown wellknown cyclone silicone gramophone anemone megaphone pheromone standalone breastbone cicerone foreknown herringbone hydrophone xylophone enthrone homophone overflown radiophone vibraphone flyblown freephone anklebone sousaphone microphone progesterone testosterone hydrocortisone saxophone anglophone francophone homegrown windblown videophone entryphone anticyclone steppingstone microloan radiotelephone Words that almost rhyme with pentabarbitone
dome tome home comb foam fome loam roam phloem gnome chrome shalom aerodrome polychrome ribosome coulomb catacomb hippodrome meerschaum whilom velodrome backcomb chromosome honeycomb cytochrome monochrome coxcomb