certainly

(adverb)

adverb

1. definitely or positively (`sure' is sometimes used informally for `surely')

- she certainly is a hard worker

- they are coming, for certain

Similar word(s): sure, surely

Sentences with certainly as an adverb:

- The accident was certainly caused by human error.

- That was certainly sweet of him.

- You may certainly join us for dinner.

- Would you like it with ice?  Certainly, and with lemon please.