Here's what rhymes with undercaptain.
captain Words that almost rhyme with undercaptain
canton caption capstan happen cannon canon chaplain gallon canyon satin fatten latin adaption batten gammon gasman fashion passion barren cabin faction famine wagon battalion mansion ration salmon assassin baron fasten falcon saffron dampen flatten hangman jasmine lation plantain tation taxon waxen banyan chanson mammon platen scansion talon scallion damson klaxon raglan underclassman reaction interaction abandon attraction fraction hadn grandson sanction dragon traction craftsman inaction bastion haben plankton prolactin stallion blacken bracken exaction madmen medallion slacken clansmen contraption flagon flaxen gladden handgun batsman diapason refashion sadden unfasten clansman madden triathlon trashcan upperclassman badman badmen flashgun taxman gyrfalcon refasten taxmen sandmen expansion imagine companion transaction compassion contraction diffraction refraction compaction draftsman draughtsman impaction redaction zooplankton benefaction counteraction detraction draftsmen dispassion landsman gravamen pentathlon bandsman rapscallion malefaction satisfaction abstraction extraction distraction retraction subtraction phytoplankton infraction reexamine stupefaction overreaction protraction liquefaction rarefaction petrifaction vitrifaction dissatisfaction putrefaction