Preempt rhymes with:
attempt, bumped, camped, clamped, contempt, cramped, crimped, damped, decamped, dumped, empt, encamped, exempt, humped, jumped, lecompte, limped, lumped, plumped, prompt, pumped, revamped, slumped, stamped, stomped, stumped, swamped, tempt, thumped, tramped, trumped, unkempt