Here's what rhymes with headmast.
mast massed last passed past fast cast vast blast caste hast amassed classed harassed aghast surpassed recast repast overcast unsurpassed enthusiast Words that almost rhyme with headmast
mashed draft laughed shaft dashed draught lashed raft smashed gasp craft grasp graft flashed clasp crashed staffed clashed slashed splashed photographed handicraft telegraphed mimeographed matched mapped mat masked that fact plant sat fat cat hat packed rat tract backed lacked trapped wrapped bat chat danced pact shalt snapped snatched tact tapped taxed cant capped chanced chant enact gasped hatched pat thatched tracked waxed canst hacked lapsed patched racked rapt sacked smacked tacked tat vat advanced impact attached attacked flat grant attract enhanced adapt detached glanced grasped intact interact react cracked elapsed financed ranked thanked branched camped clapped clasped scant slant slapped spat stacked banked damped stat strapped supplant yanked exact collapsed relaxed despatched dispatched habitat stamped clamped cramped diplomat encamped flanked implant scratched subtract detract relapsed retract transact abstract extract counteract handicapped artifact distract caveat democrat overlapped transplant aristocrat thermostat