with 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.
source: WordNet 3.0
without question
Easily the best book she's written.
source: WordNet 3.0
indicating 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.
source: WordNet 3.0
With ease; without difficulty or much effort; as, this task may be easily performed; that event might have been easily foreseen.
