Here's what rhymes with disappointing.
pointing appointing jointing anointing disjointing reappointing outpointing counterpointing Words that almost rhyme with disappointing
adjoining joining boiling coining hoisting toiling toying foisting poising buoying joying subjoining avoiding annoying spoiling voicing coiling enjoining soiling voiding broiling rejoining conjoining despoiling roiling foiling purloining moiling noising quoiting coiffing coifing hoicking overjoying destroying enjoying rejoicing alloying cloying uncoiling decoying soloing haloing reboiling stuccoing videoing buffaloing discoing employing deploying recoiling embroiling buncoing charbroiling mamboing reconnoitring redeploying reemploying