The opposite word of ‘sluggish’-

✅ কেন সঠিক: ‘Sluggish’ means slow-moving and inactive (মন্থর, অলস). Its opposite is ‘animated’, meaning lively and full of energy.

❌ অন্য অপশন: ‘Dull’, ‘heavy’ and ‘slow’ are close in meaning to ‘sluggish’, not opposite.

💡 মনে রাখুন: sluggish ← slug (শামুকজাতীয় ধীর প্রাণী)। animated = lively, vigorous, energetic.