Coarser rhymes with:
corser, courser, corser, courser, endorser, enforcer, orser, corser, courser, endorser, enforcer, fiercer, orser, parser, scarcer
Coarser sounds like:
caracara, caraker, cariker, carjacker, carragher, carreker, carriger, carriker, caseworker, charger, churchgoer, corker, corkery, corkscrew, corsair, corsaro, corser, courser, coworker, cracker, crager, craker, crazier, creager, cregar, creger, cregger, criger, crigger, croaker, crocker, crockery, croker, crooker, crosser, croucher, crouser, crozier, cruger, cruiser, cruser, crusher, curcuru, curiouser, cursor, cursory