noun
movements; sitting and standing
Refers to the physical actions of standing up and sitting down, or more broadly to one's movements and posture. Often used in contexts describing daily activities or comportment.
年を取ると、立ち居がつらくなる。
As you get older, standing up and sitting down becomes difficult.
彼女の立ち居はとても優雅だ。
Her movements are very graceful.
起居 (ききょ) is a more formal Sino-Japanese compound meaning 'daily life' or 'one's movements', while 立ち居 (たちい) is a native Japanese compound specifically emphasizing the acts of standing and sitting.
Compound of 立ち (tachi, 'standing') and 居 (i, 'sitting'), from the verbs 立つ (tatsu) and 居る (iru).