Incorrect spelling, explanation: definately is a misspelled version of an adverb definitely. Definitely is a composition of an adjective definite supplemented with suffix -ly. On that account, the only correct version is definitely and not definately.

Correct spelling, explanation: definitely is an adverb, which was composed of two parts: an adjective: definite and suffix -ly. Joined together, they form an adverb definitely. Therefore, the version definately is not correct, because there is a spelling mistake.

Definition of definitely:
adverb: unambiguously, certainly, without doubt
I really enjoyed this movie, I am definitely going to watch the next part.
I will definitely fail today’s math exam, I have no idea how to solve these equations.

Incorrect spelling

Incorrect spelling

Incorrect spelling

Incorrect spelling

Incorrect spelling

Incorrect spelling

Incorrect spelling

Incorrect spelling