Synonyms of the word

ennui

• n. A gripping listlessness or melancholia caused by boredom; depression.
• v. (transitive) To make bored or listless; to weary.

boredom

• n. (uncountable) The state of being bored.
• n. (countable) An instance or period of being bored; A bored state.

dissatisfaction

• n. unhappiness or discontent.
• n. the cause of such feelings.

tedium

• n. Boredom or tediousness; ennui.