CRUMMY Meaning of CRUMMY in English [crum.my] also crumby adj crum.mi.er also crumb.i.er ; -est [ME crumme] (1567) 1 obs: crumbly 2. a: miserable, filthy b: cheap, worthless -- crum.mi.ness n Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012