anything or everything that. no matter what. WHATNOT. WHAT sense 1a(1) —used to express astonishment or perplexity. any … that: all … that. no matter what. of any kind at all —used after the substantive it modifies with any or with an expressed or implied negative. in any case: whatever the case may be —sometimes used interjectionally to suggest the unimportance of an issue or decision between alternatives.