potable UK /ˈpəʊtəbəl/US /ˈpoʊtəbəl/adjective 1noun 1forms 3 adjective1 •(formal) Good for drinking without fear of waterborne disease or poisoning.The water from this river should not be considered potable without disinfection: you may be OK if you drink it raw, but you're gambling if you do so. noun1 •Any drinkable liquid; a beverage.When solar beams / Parch thirsty human veins, the damask'd meads, / Unforc'd display ten thousand painted flow'rs / Useful in potables. — 1708 formspotables · more potable · most potable