Sleeker rhymes with:
bleaker, bleecker, bleeker, leaker, beaker, beeker, bieker, bleaker, bleecker, bleeker, dijker, eaker, kiecker, leaker, meaker, meeker, reker, rieker, seeker, sneaker, speaker, spieker, squeaker, streaker, strieker, weaker
Sleeker sounds like:
salazar, salguero, salser, salzer, salzhauer, schlager, schleicher, schleiger, schlesser, schlicher, schlicker, schloesser, schlosser, seliger, selsor, selzer, silguero, slacker, slager, slasher, slicer, slicker, sligar, sliger, sliker, slugger, slusher, slusser, sulcer, sulser, sulzer