The easiest synonym for “importunate” is “pester.” If you’re being importuned, you’re being bothered by constant requests. The word comes from the Latin “importūnus,” meaning “unfavorable, inconvenient, adverse, troublesome, relentless.” It came into Middle French as “importuner,” meaning “to tire, annoy by inappropriate persistence.” “Importune” is most commonly used as a verb, but it can also serve as an adjective. You might also see it as “importunate,” meaning “troublesomely urgent; overly persistent in request or demand.”