Antonyms

Languid means displaying or having a disinclination for physical exertion or effort; slow and lethargic. Vigorous means strong, healthy, and full of energy, representing the direct opposite. The other options (droopy, indolent, sluggish) are similar in meaning to languid.

Lassitude means a state of physical or mental weariness; lack of energy or enthusiasm. Alacrity means brisk and cheerful readiness or willingness, representing the complete opposite - eager enthusiasm versus tired listlessness. The other options (exhaustion, sluggishness, laziness) are synonyms.

Lascivious means lustful or lewd. Abstinent means self-restrained or not indulging in pleasures, making it a direct opposite.

Laudable means deserving praise or commendation. Despicable means contemptible or deserving of scorn, making it a direct opposite.

Levity means treating serious things with humor or lack of appropriate seriousness. Seriousness is the state of being serious, making it the direct opposite.

Latent means existing but not yet developed or manifest; hidden or concealed. Overt means open to view; not concealed, making it the direct opposite.

Licentious means lacking moral discipline or restraint; ignoring rules. Moral means concerned with principles of right and wrong, making it the direct opposite.

Listless means lacking energy or enthusiasm; lethargic. Enthusiastic means having or showing intense interest or excitement, making it the direct opposite.

Libel means a published false statement damaging to reputation; defamation. Praise means expressing warm approval or admiration, making it the direct opposite.

Luminary means a person who inspires or influences others; a celebrity or distinguished figure. Undistinguished means not outstanding or notable, making it the direct opposite.

Loquacious means tending to talk a lot or excessively. Taciturn means reserved in speech; saying little, making it the direct opposite.

Lugubrious means looking or sounding mournful or gloomy. Cheerful means noticeably happy and optimistic, making it the direct opposite.

Lithe means thin, supple, and flexible. Flabby means lacking firmness, resilience, or muscle tone, making it the direct opposite.

Malaise means a general feeling of discomfort, illness, or uneasiness. Comfort means a state of physical ease and freedom from pain, making it the direct opposite.

A malcontent is someone who is dissatisfied and unhappy. Therefore, 'satisfied' is the opposite in meaning. Options like grouch, moaner, and unpleasant are synonyms or related concepts, not antonyms.