Concealing rhymes with:
ceiling, sealing, seeling, sieling, annealing, appealing, ceiling, darjeeling, dealing, ealing, feeling, freehling, frieling, healing, heeling, heling, keeling, kneeling, mealing, peeling, reeling, repealing, revealing, sealing, seeling, sieling, squealing, stealing, teeling, unappealing, unfeeling, wheeling
Concealing sounds like:
canceling, cancelling, commingling, conkling, consoling, counseling