The expression "draw blank" generally implies to fail or to have a fruitless outcome, but there are various antonyms that can be used in its place. The antonym for this phrase can be "succeed," "solved," "accomplished," or "realized." Instead of "drawing a blank," one can say "hit the jackpot" or "struck gold." These phrases can be used when someone is successful in finding an answer or a solution. Other antonyms of "draw blank" might include "discover," "unravel," "uncover," "unearth," or "deem." These words demonstrate that even when not finding an outcome, there are many other words that can be used instead of "drawing a blank.