fire and forget noun 2adjective 1 noun2 •A kind of missile guidance system which does not require further control after launch, and can hit its target without the launcher being in line of sight of the target. •[before a noun] The practice of transmitting or raising something, such as an event, and then proceeding without checking for any result or response.Post is a “fire and forget” where the UI thread work is performed asynchronously; Send is synchronous in that the call blocks until the UI thread work has been performed. — 2014 adjective1 •Not requiring further control, feedback, or response after an initial action, launch, etc.