Rigidifies refers to the process of making something stiff, inflexible or unyielding. The antonyms or opposite words for rigidify are words like soften, loosen, relax, bend, flex, change or adapt. When something is softened, it becomes more pliable and less rigid. Loosening something makes it less tight or constricting, while relaxing it reduces its level of tension, adding some elasticity. Bending, flexing or adapting soften the hard edges of rigidity, allowing for more freedom of movement, change and creative expression. All these antonyms help to loosen up a rigid situation and allow for more fluidity in our daily lives.