The phrase "most ivory tower" typically denotes a state of detachment or aloofness from the realities of the world. Antonyms for this phrase would include grounded, practical, engaged, and aware. Grounded suggests being firmly rooted in reality and aware of one's surroundings. Practical, similarly, suggests a focus on real-world solutions and pragmatic approaches. Engaged implies an active involvement with the world, rather than being removed from it. Finally, aware suggests a general attentiveness to the world and its happenings. To be the opposite of "most ivory tower" is to be connected, engaged, and aware of the world around us.