The phrase "catches wink" is an idiom that means to sleep or take a nap. Antonyms for this would include words that express movement or activity, such as "awake," "alert," "energetic," "active," and "vigilant." These words describe the opposite state of the body during a wink-capturing moment. Other antonyms could include words that indicate conscious awareness, such as "mindful," "awake," and "mindful." People often use antonyms to help clarify the difference between two opposing states, like sleepy versus active, and to describe something in a more precise way. Whatever the antonym, the contrast provides the reader with a clear understanding of the word's meaning.