spacely adjective 1adverb 1forms 2 adjective1 •Of, relating to or pertaining to space, especially outer space; space-like.The Earthly chronometer will indeed indicate that several decades have passed; whereas the spacely chronometer will indicate instead that several years have passed. — 2008 adverb1 •(nonstandard) spatiallyTo realize a NTS one must have a spacely extended clock. — 1982 formsmore spacely · most spacely