grubby /ˈɡɹʌbi/adjective 3noun 1forms 3 adjective3 •Dirty, unwashed, unclean.He's a grubby little boy, always playing around by the stream. •(figurative) Disreputable, sordid. •Having grubs in it. noun1 •(dialect, US) Any species of Cottus; a sculpin. formsgrubbies · grubbier · grubbiest