(noun) a relaxed comfortable feeling. Synonyms: dreaminess.
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Noun Definition 1
(noun) a feeling of lack of interest or energy. Synonyms: lassitude, listlessness.
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Noun Definition 2
(noun) inactivity; showing an unusual lack of energy. Synonyms: lethargy, sluggishness, phlegm, flatness. Examples: "The general appearance of sluggishness alarmed his friends."