Slicer rhymes with:
leiser, beiser, dryser, geiser, heiser, huyser, keiser, kreiser, kyser, kysor, leiser, meiser, nicer, peiser, preiser, pricer, reiser, ryser, schmeiser, seiser, smyser, spicer, ticer, weiser, weisser, zaiser, zeiser
Slicer sounds like:
salazar, salguero, salser, salzer, salzhauer, schlager, schleicher, schleiger, schlesser, schlicher, schlicker, schloesser, schlosser, seliger, selsor, selzer, silguero, slacker, slager, slasher, sleeker, slicker, sligar, sliger, sliker, slugger, slusher, slusser, sulcer, sulser, sulzer