The phrase "being wild about" refers to having an intense passion or enthusiasm for something. However, there are many antonyms for this phrase, such as indifferent, apathetic, disinterested, and unenthusiastic. These words describe someone who lacks interest or excitement about a particular topic or activity. Other antonyms include wary, cautious, and reserved, which suggest a sense of hesitancy or wariness towards a particular thing. Being wild about can be seen as a positive trait, but it's essential to remember that not everyone feels the same level of excitement or passion. It's okay to have different interests and levels of enthusiasm.