2 capable of being readily changed the caterer's menu is adaptable to specific dietary needs, such as vegan, kosher, or low-fat Synonyms of adaptable flexible, adjustable, alterable, changeable, elastic, fluid, malleable, modifiable, pliable, variable Words Related to adaptable changing, fluctuating, inconstant, labile, unstable, unsteady, varying, versatile Near Antonyms of adaptable constant, stable, steady, unchanging, uniform, unvarying Antonyms of adaptable established, fixed, immutable ...