Antonyms of adj languorous

1 sense of languorous

Sense 1
dreamy, lackadaisical, languid, languorous -- (lacking spirit or liveliness; "a lackadaisical attempt"; "a languid mood"; "a languid wave of the hand"; "a hot languorous afternoon")

INDIRECT (VIA lethargic) -> energetic -- (possessing or exerting or displaying energy; "an energetic fund raiser for the college"; "an energetic group of hikers"; "it caused an energetic chemical reaction")

Similarity of adj languorous

1 sense of languorous

Sense 1
dreamy, lackadaisical, languid, languorous -- (lacking spirit or liveliness; "a lackadaisical attempt"; "a languid mood"; "a languid wave of the hand"; "a hot languorous afternoon")
       => lethargic (vs. energetic), unenrgetic -- (deficient in alertness or activity; "bullfrogs became lethargic with the first cold nights")