Underwriting rhymes with:
overwriting, overwriting, rewriting, writing, benighting, biting, citing, delighting, exciting, fighting, igniting, inciting, indicting, inviting, kiting, lighting, nonbiting, overexciting, overwriting, reciting, reigniting, reuniting, rewriting, sighting, siting, slighting, unexciting, uninviting, uniting, whiting, writing