Rappelling rhymes with:
propelling, repelling, propelling, repelling, compelling, dispelling, expelling, misspelling, propelling, repelling, spelling
Rappelling sounds like:
raveling, rebelling, rebellion's, rebellions, refueling, repealing, repelling, replaying, replenish, replying, revaluing, revealing, reveling, revlon's, rifling, rippling, rivaling, robling, roebling, ruffling