The antonyms for in-elasticity include a variety of terms that describe flexibility, adaptability, and resilience. Elasticity refers to the ability of a material to return to its original shape after being stretched or compressed. Therefore, antonyms of in-elasticity include malleability, pliability, suppleness, and flexibility. These words suggest an ability to be molded, reshaped, or adjusted easily. Other antonyms may include resilience, springiness, and buoyancy, which describe the capacity to absorb shocks, pressures, or stresses and return to its original state. In contrast, in-elasticity suggests a rigidity, stiffness, or inflexibility that cannot adjust to changes or pressures.