take a rain check

== English == === Alternative forms === take a raincheck === Verb === take a rain check (third-person singular simple present takes a rain check, present participle taking a rain check, simple past took a rain check, past participle taken a rain check) To request or accept a rain check (an agreement from a merchant to honor a special offer, temporarily unavailable, after the expiration date). (figurative) In social interactions, to request a deferred invitation, as a polite way to turn down an engagement, usually with the implication that one is simply postponing it and another time might be acceptable. Synonym: raincheck (verb)