"lassitude" in German lassitude Lassitudo Mattigkeit Detailed translations for "lassitude" lassitude 1. medicine lassitude das Lassitudo{neuter} 2. other lassitude(also: faintness, languor) die Mattigkeit{feminine} English synonyms for "lassitude" lassitude {n} inanition languor lethargy listlessness slackness sluggishness