Antonyms of "catches off guard" include "prepared," "expecting," "alert," "ready," "aware," and "anticipated." When someone is prepared, they are equipped to handle unexpected situations and are less likely to be caught off guard. Being aware and alert also helps prevent being taken by surprise. Anticipating and expecting something to happen allows individuals to plan accordingly and avoid being caught off guard. However, sometimes being caught off guard can lead to spontaneity, creativity, and a fresh perspective. Ultimately, being prepared and aware can help minimize the negative effects of being caught off guard.