To free someone from ennui (a feeling of tiredness and lack of interest in life).
From dis- (remove, reverse) + ennui (from French ennui, meaning boredom or weariness). Ennui itself comes from Old French enui, related to the word for annoyance. This is a rare literary coinage combining the prefix with the 18th-century French loanword.
Ennui is that sophisticated word meaning world-weary boredom that you see in poetry—and 'disennui' is the antidote! It's rarely used, but it perfectly captures the opposite: reawakening interest and energy in someone who's been bored with everything.
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