1. with ease (`easy' is sometimes used informally for `easily')

- she was easily excited

- was easily confused

- he won easily

Similar word(s): easy

2. without question

- easily the best book she's written

3. indicating high probability; in all likelihood

- a mistake that could easily have ended in disaster

Similar word(s): well

Sentences with easily as an adverb:

- This is easily the best meal I have eaten.