Definitely in a sentence as an adverb

It's just reading about it that frustrates me, which is definitely a sign I should be doing less of it.

And definitely dealt with it in a less public matter, it just screams "look at me i'ml so awesome give me some attention".

It definitely made the web better for me, and I suspect, any other developer out there.

I'm not saying I definitely could have done better, but I do think my probability of failure would have been <= to theirs.

What they had done was not against any laws at the time, and definitely within their organizations' code of conduct.

You 150-odd ex-Amazon folks here will of course realize immediately that #7 was a little joke I threw in, because Bezos most definitely does not give a **** about your day.#6, however, was quite real, so people went to work.

No, not when they're being prototyped or tested or used in small scale settings - but definitely somewhere on the path from "tactical use" to "broad strategic dependence".These are not small issues, nor need they be at all partisan.

My story is just one datapoint of so many -- most of which are private, but easily discoverable by quietly asking around the Valley -- that should help you realize that Facebook is definitely not the company you want operating the world's social infrastructure.

Definitely definitions

adverb

without question and beyond doubt; "it was decidedly too expensive"; "she told him off in spades"; "by all odds they should win"

See also: decidedly unquestionably emphatically