Which word describes a gradual decrease in strength, often used metaphorically?

• A. Increase
• B. Diminish
• C. Wane
• D. Decline

Answer: (C)

Describing a slow, fading strength, the best fit is a word that means to become weaker or less intense gradually over time, often used metaphorically. To wane is to fade away bit by bit, like energy, interest, or power that declines slowly, which is why we often hear phrases such as “enthusiasm waned” or “the moon wanes.” This nuance of gradual reduction is what sets it apart from the others. Diminish means to reduce in size or importance, but it doesn’t inherently emphasize the slow, progressive fading. Decline refers to a downward trend more generally and can be abrupt or gradual, but it lacks the specific image of a steady, progressive weakening. Increase is simply the opposite. So the term that best conveys a slow, ongoing decrease is wane.