Antonyms for "in quandary" include "clear," "certain," "decisive," "confident," "resolved," and "assured." When a person is in quandary, they are uncertain, hesitant, and unable to make a decision. However, when a person is clear, certain, or decisive, they know what they want or need to do, and they are confident in their ability to make the right choice. Being resolved and assured means that a person has a strong determination and belief in their decision-making ability, and they can face any challenge with confidence. These antonyms provide a sense of clarity and certainty that can help individuals to navigate difficult situations confidently.