(r)easily, easywith ease (`easy' is sometimes used informally for `easily')“she was easily excited”, “was easily confused”, “he won easily”, “this china breaks very easily”, “success came too easy”
(r)well, easilyindicating high probability; in all likelihood“I might well do it”, “a mistake that could easily have ended in disaster”, “you may well need your umbrella”, “he could equally well be trying to deceive us”