expression, i-adjective
Describes a person who is approachable and does not act superior despite their status or ability. Literally 'low-waisted', evoking a polite bowing posture.
See also: 腰の低い
彼は社長なのに腰が低くて、誰からも好かれている。
Even though he's the company president, he's very humble and liked by everyone.
That teacher is unassuming and answers students' questions politely.