| Word | Definitions | Synonyms |
|---|---|---|
| lethality | (noun) the quality of being deadly | Synonyms: deadliness |
| lethargy | (noun) weakness characterized by a lack of vitality or energy | Synonyms: inanition, lassitude, slackness |
| (noun) inactivity; showing an unusual lack of energy | Synonyms: flatness, languor, phlegm, sluggishness | |
| (noun) a state of comatose torpor (as found in sleeping sickness) | Synonyms: lassitude, sluggishness |