Synonyms for vigorous

Adjective

1. vigorous, energetic (vs. lethargic)

usage: characterized by forceful and energetic action or activity; "a vigorous hiker"; "gave her skirt a vigorous shake"; "a vigorous campaign"; "a vigorous foreign policy"; "vigorous opposition to the war"

2. vigorous, robust (vs. frail)

usage: strong and active physically or mentally; "a vigorous old man who spent half of his day on horseback"- W.H.Hudson