Synonyms and related words :
abandon, brush aside, brush off, dismiss, drop it, drop the subject, fat chance, forget, forget about it, ignore it, lay aside, let it go, let it pass, let slip, never mind, nix, no matter, no sirree, no way, nope, not a chance, not much, nothing doing, push aside, put aside, set aside, shrug off, skip it, sneeze at, think nothing of, thrust aside, turn away from