noun
Formal, somewhat literary term for a person's overall conduct and demeanor, especially in social or official settings. Often implies propriety and composure.
彼の起居挙動には常に品がある。
His bearing always has elegance.
公式の場では起居挙動に気をつけなければならない。
In formal settings, one must be mindful of one's deportment.
Compound of 起居 (daily life, rising and resting) and 挙動 (behavior, movements). The combination emphasizes the totality of one's conduct in daily life.