Here's what rhymes with longerserving.
serving observing curving conserving swerving unnerving preserving deserving reserving unswerving undeserving Words that almost rhyme with longerserving
surfing nursing conversing cursing birthing unearthing reversing traversing rehearsing immersing coercing dispersing disbursing searching asserting affirming hurting herding hurling surging averting verging shirking working concerning learning burning turning occurring stirring confirming converting sterling wording yearning conferring converging curling lurking merging whirling churning jerking purging swirling alerting chirping curbing flirting hurtling skirting thirsting lurching perching perverting purring scourging smirking spurring spurting whirring yearling emerging referring bursting inserting discerning diverting exerting blurring concurring diverging researching deferring inferring inverting manuring reaffirming reverting squirming subverting twirling usurping darning perturbing returning disturbing preferring recurring incurring overturning reworking deterring transferring disconcerting