taru-adjective, adverb taking the 'to' particle
free and easy; leisurely; unhurried
Describes a relaxed, unhurried, and composed manner. Often used in literary or formal contexts with the たる adjective form or adverbially with と.
彼は綽々たる態度で難局に臨んだ。
He faced the difficult situation with a calm and composed attitude.
休日は綽々と過ごしたい。
I want to spend my day off in a leisurely way.
Alternate kanji spelling without the iteration mark; less common but still encountered.
The exact derivation is uncertain. The kanji 綽 carries meanings of 'spacious' or 'generous', and the reduplicated form 綽々 likely developed as a mimetic or descriptive term for a relaxed, unhurried state.