sloth

(noun) a disinclination to work or exert yourself. Synonyms: slothfulness.

(noun) any of several slow-moving arboreal mammals of South America and Central America; they hang from branches back downward and feed on leaves and fruits. Synonyms: tree sloth.

(noun) apathy and inactivity in the practice of virtue (personified as one of the deadly sins). Synonyms: laziness, acedia.