(1):

(n.) Freedom from jolting, jerking, or straining.

(2):

(n.) Freedom from effort, constraint, or formality; - said of style, manner, etc.

(3):

(n.) Freedom from emotion; compliance; disposition to yield without opposition; unconcernedness.

(4):

(n.) Freedom from difficulty; ease; as the easiness of a task.

(5):

(n.) The state or condition of being easy; freedom from distress; rest.