Here's what rhymes with transpiring.

Consider these alternatives

transpire / fire transpired / desired transpires / desires dramatizes / enterprises substantiates / states deduce / use differentiates / states untoward / called musing / using underlay / they foretell / well foreshadowing / shadowing underlies / size overhear / here quantifies / size afoot / should philosophizing / rising agonize / size oftentimes / times underlie / lie surmises / enterprises