The correct answer is- 'Hunched' Key Points - let's look at the meaning of the given word and the correct answer: - Gibbous (adjective): If there is a gibbous moon, you can see more than half of the moon but not all of it.- Example: The body whorl is deflected toward the aperture, and appears gibbous. - Hunched(adjective): leaning forward with your shoulders raised, or bending your back and shoulders into a rounded shape. - Example: Sitting hunched over a computer all day can cause problems. Hence, the word Hunched is the most appropriate synonym for Gibbous.