noun
indolence
IN-duh-luns/ˈɪndələns/
Unwillingness to make an effort.
His indolence keeps him on the couch while chores pile up.

Etymology
“Not suffering pain” first described insensibility, then a neutral state of rest or ease. Its shift to laziness may reflect avoiding trouble or refusing to “take pains.”
In context
diligence is the mother of good fortune, and indolence, its opposite, never yet attained the object of an honest ambition.
More examples
- She mistakes his exhaustion for indolence.
- Out of sheer indolence, I order delivery instead of cooking.
- The manager blames indolence for the team's unfinished work.
Forms
indolence
indolent adjective — Unwilling to work or make an effort.
Similar words
- laziness
- The everyday term for unwillingness to work or exert oneself.
- sloth
- Suggests habitual laziness, often with strong moral disapproval.