Sleekest rhymes with:
bleakest, bleakest, weakest, anarchist, blackest, bleakest, darkest, focused, focussed, locust, refocused, sickest, slickest, unfocused, weakest
Sleekest sounds like:
salcedo, salcido, salgado, scalzitti, schlecht, schlicht, schlict, select, selected, shellshocked, shelstad, silcott, silicate, silkwood, silliest, skylight, slacked, slaght, slashed, slechta, sleight, sliced, slicked, slickest, slight, slighted, slogged, slowest, slugged, slushayete, socialist, socialized, sociologist, solicit, solicited, solicitude, soloist, squelched, squillacote, sulked