expression, suru verb (irregular)
relax; make oneself comfortable
Used when someone physically or mentally eases up, loosens clothing, or settles into a comfortable position. Often in the form 楽にして.
See also: 楽 (らく)
どうぞ楽にしてください。
Please make yourself comfortable.
ネクタイを緩めて楽にした。
I loosened my tie and relaxed.