Some antonyms for the phrase "headed trip" include staying put, remaining still, being grounded, anchored, or stable. These antonyms generally refer to the opposite experience of traveling, where one is in a fixed location rather than on a journey. While a "headed trip" typically involves movement, adventure, and exploration, these antonyms suggest a sense of stability, predictability, and complacency. However, it's important to remember that these antonyms are not necessarily negative, as they can also represent an appreciation for home, routine, and familiar surroundings. Ultimately, the opposite of a headed trip depends on one's perspective and personal values.