Spittle rhymes with:
pittle, pytel, acquittal, belittle, bittel, bittle, brittle, committal, hittle, it'll, kittel, kittell, kittle, knittel, knittle, littell, little, lyttle, noncommittal, pittle, pytel, rittle, skittle, smittle, tittel, tittle, transmittal, vittle, whittle, zittel
Spittle sounds like:
sheftel, shevtl, sofitel, softly, spatial, spatola, spatula, speedily, speidel, spidel, spidell, spidle, spitale, subtitle, subtle, subtly, swiftly