Here's what rhymes with undergoing.
going growing showing knowing glowing sewing bowing rowing sowing towing crowing hoeing lowing shoeing toeing flowing throwing blowing slowing snowing stowing unknowing kowtowing meowing foregoing bestowing easygoing forgoing oceangoing ingrowing overflowing overthrowing foreknowing snowshoeing Words that almost rhyme with undergoing
coating coding coping coaching combing coking goading closing clothing loading rolling voting hoping noting opposing quoting choking cloning groping joking polling posing soaking zoning boating bowling coasting decoding dosing foaming groaning growling loathing moaning poking roaming roving atoning coaxing croaking dozing homing poaching tolling deposing doting gloating honing loafing loaning nosing phoning roping toning toting boding cloaking doling gloaming holing moping poling purposing scoping shoaling underclothing yoking boning doming ghosting grossing hosing soaping apposing foaling joshing paroling holding approaching floating promoting smoking encoding folding proposing sloping supposing boasting denoting devoting molding moulding posting probing provoking unloading diagnosing evoking hosting patrolling roasting scolding bolting eroding interposing jolting bemoaning bloating buttoning cajoling droning moulting scrolling stoning toasting trolling unrolling broaching connoting disowning molting stoking unbuttoning unloving offloading demoting emoting hoaxing controlling imposing composing exposing unfolding disposing enclosing invoking upholding beholding consoling disclosing encroaching stroking strolling engrossing ennobling enrolling extolling inclosing overloading reposing bowstring condoning reloading revoking telephoning telescoping intoning logrolling nonvoting rezoning condoling convoking disrobing imploding overdosing proroguing superposing blazoning chaperoning cuckolding honeycombing misquoting overgrowing unimposing revolting decomposing exploding foreboding postponing reproaching juxtaposing presupposing transposing enfolding foreclosing nonsmoking wainscoting infolding refolding remolding remoulding buttonholing pawnbroking pigeonholing withholding superimposing recomposing predisposing