relaxed

Made slack or feeble; weak, soft.

It was a very wet morning. I woke relaxed and melancholy as in the country, and walked about an hour under cover, in the middle of the town […].

Made more lenient; less strict; lax.

The relaxed rules were greatly tightened after the lawsuit.

I corralled the judge, and we started off across the fields, in no very mild state of fear of that gentleman's wife, whose vigilance was seldom relaxed.

Free from tension or anxiety; at ease; leisurely.

He's a relaxed kind of guy, he never lets himself get upset.

Students and faculty members lunch at the cafeteria and naturally communicate freely with one another in a relaxed and informal setting.

Without physical tension; in a state of equilibrium.

Of a muscle: soft, not tensed.