Antonyms for the phrase "catch off-guard" include words like 'aware', 'alert', 'vigilant', 'prepared', 'ready', and 'foreseeable'. Being aware of the situation or remaining vigilant enables one to anticipate and react to sudden events, which cannot be done when caught off-guard. Anticipating situations or being prepared for them is another way to minimize chances of being taken by surprise. A foreseeable event is one that is expected, and it is possible to plan for such events beforehand. Staying alert and ready while avoiding distractions can help prevent one from being taken off-guard, which leads to unnecessary stress and complexities.