Meaning : Possessing or exerting or displaying energy.
Example :
An energetic fund raiser for the college.
An energetic group of hikers.
It caused an energetic chemical reaction.
Deficient in alertness or activity.
Bullfrogs became lethargic with the first cold nights.Meaning : Working hard to promote an enterprise.
Synonyms : gumptious, industrious, up-and-coming