Select the most appropriate antonym of the given word.

Sluggish

Active

The most appropriate antonym of the word sluggish is active.

• Sluggish means "slow-moving or inactive."
• Active means "full of energy and activity; busy."

The other words have different meanings to sluggish, so they are not good antonyms.

• Weak means "having little strength or power."
• Sedentary means "of or relating to people who spend much time sitting or lying down."
• Dull means "not bright or clear; lacking in interest or excitement."