"Cooked with gas" implies something is moving swiftly and successfully. Its antonyms would be phrases that indicate something is slow-moving or failing. Examples of antonyms for "cooked with gas" include "struggling to get off the ground," "moving at a snail's pace," "sputtering," or "lagging behind." Alternatively, antonyms could describe a playful or leisurely pace, such as "poking around," "taking it easy," or "moving at a crawl." Employing antonyms for "cooked with gas" can add depth, nuance and humor to language, making it richer and more expressive.