Obtunds means to dull or blunt the sensitivity or sharpness of something.
The antonyms of obtunds include words of opposite meaning such as sharpen, enhance, and stimulate. Sharpen refers to enhancing the keenness, acuteness, or intensity of something. Enhance means to increase, elevate, or augment the quality or value of something. Stimulate means to excite, inspire, or invigorate the sensitivity or energy of something.
Other antonyms of obtunds include amplify, intensify, exalt, and revive. These words carry the opposite meaning of dulling, numbing, or reducing the sensitivity or sharpness of something. They imply an increasing, elevating, or renewing effect on the object or subject.