座すわり直なおす

godan verb (-su), intransitive verb

to reseat oneself; to correct one's sitting posture

Used when someone shifts or adjusts their seated position, often to sit more properly or comfortably.

• 彼かれは椅い子すに座すわり直なおして、話はなしを続つづけた。

  He reseated himself in the chair and continued talking.

• 正せい座ざがきつくなったので、少すこし座すわり直なおした。

  Sitting on my heels became uncomfortable, so I adjusted my sitting position a little.