Unceremonious, as among close friends; free, casual, informal. Also: inappropriately friendly or informal, esp. with a person of a different class or…

In good sense: Unconstrained, free, easy.

figurative. That takes things easily; comfort-loving; inactive, indolent.

Free from constraint or stiffness; chiefly of or with reference to bodily posture or movements. Also transferred of manners or behaviour: Free…

= easy-going, adj. (in various senses).