rapid, brisk, prompt, ready :D
thesaurus.com
Lethargic is a word that means tired, lazy sluggish, so antonyms of lethargic would be energetic and active.
Slow.
antonym: slow
The antonym of the word 'synonym' is 'antonym'.
an antonym is a word opposite in meaning to another. e.g. Fast is an antonym of slow and big is an antonym of small
slow or sluggish
An antonym for sluggish is energetic or lively.
strayd
sluggish
A synonym for the word "sluggish" is "lethargic" or "listless."
A synonym for slow or sluggish is lethargic.
The root word for "sluggish" is "slug," which originally referred to a snail or shell-less mollusk known for its slow movement.
A synonym for slow is plodding, sluggish, or inactive.
Comatose, sluggish, dull
Perhaps slow or lower?
Lethargic is a word that means tired, lazy sluggish, so antonyms of lethargic would be energetic and active.
Slow Down, Slow, retared