roachy adjective2 •(US) Resembling or characteristic of cockroaches.(a).—Active, wary, light-brown insects with a “roachy” odour, found in pantries and bakeries; several species but the most common is the Croton-Bug or German Cockroach. (Ectobia Germanica) — 1915 •(US) Infested with cockroaches.Another letter tells of visiting Mary Earle on Long Island. It sounds fine, but you are right that romantic things really happened in roachy kitchens and back yards. — 1937 formsmore roachy · roachier · most roachy · roachiest