Crashing rhymes with:
thrashing, trashing, bashing, caching, cashing, clashing, dashing, fasching, flashing, gnashing, hashing, lashing, rehashing, slashing, smashing, splashing, stashing, thrashing, trashing
Crashing sounds like:
caressing, caricom's, carjacking, carjackings, carousing, carson's, charging, cherishing, chrzanowski, churchgoing, churkin's, circumcise, coarsening, coercing, corking, corkins, corrigan's, coursing, cracking, crasnianski, craziness, creaking, crescenzi, crescenzo, crishman's, croaking, crookshank, crookshanks, crossing, crossings, crouching, cruickshank, cruikshank, cruising, crushing, cryogenic, cryogenics, cursing