Anaesthetise means to administer a drug or gas to induce loss of consciousness or sensation. Some antonyms for this word are "awaken," "stimulate," "enliven," "activate," "invigorate," and "energize." When a person is anaesthetised, they become lethargic and unable to function normally. However, to awaken them means to restore their awareness and get them back to their usual active state. Stimulating someone energizes their brain and body, which can improve their focus and creativity. Similarly, activating someone makes them alert and responsive to their surroundings. Invigorating someone who is anaesthetised boosts their energy, and energizing them can jump-start their enthusiasm and motivation.