Webster's Revised Unabridged Dictionary · 1913

easygoing

easygoing (ēz"y*gō`ing) , adjective

1.
Moving easily; hence, mild-tempered; relaxed and casual; ease-loving; inactive. Contrasted with tense.
2.
having a lax moral or disciplinary standard.
3.
unhurried; as, an easygoing pace. Opposite of hurried.
4.
unaggressive; as, his easygoing approach to business. Opposite of aggressive.

Also: easy-going