The phrase "over heads" is often used to refer to concepts or ideas that are difficult to grasp or understand. Some antonyms for this phrase might include terms like "simple," "straightforward," or "easy to understand." Other antonyms for "over heads" might include terms like "obvious," "apparent," or "plain," which suggest that a particular concept or idea is clear and easy to perceive. Additionally, antonyms for "over heads" might include terms like "accessible," "reachable," or "within reach," which suggest that a particular concept or idea is not too difficult to understand or access.