The phrase "am in air" can be interpreted as being weightless or suspended in mid-air, but there are several antonyms that can be used to describe the opposite effect. These can include words such as grounded, anchored, rooted, stationary, and fixed. These antonyms describe a state where the subject is firmly planted on the ground or another surface, with no movement or sense of lightness. When we use antonyms for "am in air", it emphasizes the importance of stability and being grounded, highlighting the opposite feelings of flight and ascent. It's important to remember that antonyms can help provide a complete understanding of a word or phrase and its opposite meanings.