Which word means liable to sudden unpredictable changes of mood or mind?

Which word means liable to sudden unpredictable changes of mood or mind?

• A. Listless
• B. Pithy
• C. Mercurial
• D. Veracity

Answer: (C)

Mercurial describes someone whose moods or opinions can change suddenly and unpredictably. It conveys a sense of volatility and rapid shifts in temperament, like the quick, elusive changes you might imagine with the Roman messenger Mercury. That makes it the best fit for the idea of being liable to unexpected mood swings. Listless refers to lacking energy or interest, which isn’t about shifting moods. Pithy means concise and to the point, not about emotional changes. Veracity means truthfulness or accuracy, unrelated to mood or mind changes. A sentence like “Her mercurial moods swing from cheerful to peevish in minutes” helps show how this word captures the intended sense of volatility.

Mercurial describes someone whose moods or opinions can change suddenly and unpredictably. It conveys a sense of volatility and rapid shifts in temperament, like the quick, elusive changes you might imagine with the Roman messenger Mercury. That makes it the best fit for the idea of being liable to unexpected mood swings.

Listless refers to lacking energy or interest, which isn’t about shifting moods. Pithy means concise and to the point, not about emotional changes. Veracity means truthfulness or accuracy, unrelated to mood or mind changes. A sentence like “Her mercurial moods swing from cheerful to peevish in minutes” helps show how this word captures the intended sense of volatility.