Whisler rhymes with:
whistler, wissler, kissler, missler, rissler, shissler, whistler, wissler, aksler, bassler, bessler, betzler, bicksler, bixler, bresler, bressler, chrysler, cressler, dantzler, dassler, dietzler, ditzler, dotzler, dressler, drexler, eisler, etzler, eutsler, exler, fassler, fessler, fixler, fritzler, geisler, geissler, geiszler, gentzler, haeussler, hartzler, hassler, hessler, hetzler, hitschler, hostler, hutzler, kassler, keslar, kessler, kissler, kreisler, kressler, kuntsler, meitzler, messler, metzler, missler, nessler, pixler, pressler, preszler, ressler, rissler, russler, rustler, schnitzler, schuessler, schussler, sessler, setzler, shissler, tessler, traxler, tressler, trexler, troxler, waxler, wechsler, wessler, wetzler, wexler, whistler, wissler, wussler
Whisler sounds like:
wagler, waxler, wechsler, wesler, wessler, wexler, wieseler, wisler, wissler, wussler