Ennui is a tired, bored, empty feeling — not after one dull hour, but with your days, your work, or your whole way of living. You are not simply bored of this film; you feel that nothing is quite enough. English borrowed the word from French and still says it in a French way (roughly on-WEE). It belongs to books, essays, and people who like fine words. In a normal chat, I'm bored or I'm tired of everything is what most people say. Though actually, ennui is a close old cousin of annoy: both grew from Latin in odio, “in hate,” but they grew apart. Annoy is everyday and sharp; ennui is slow and heavy.