Incorrect spelling, explanation: adding one more c in preposition across is a misspelling. The correct form originating in the word cross is across and double c is unnecessary.

Correct spelling, explanation: the word comes from the verb cross which means going through something, from one side to another, and a prefix a-. As the word has its origins in a particular verb, it is incorrect to write accross

Definition of across:
1. preposition, from one side of something/somewhere to another, on the other side
The fastest way would be across this river.
I just love this coffee shop they opened across the street last week.
2. adverb, if something happens across it means it affects all particular area/situation
It is not only California’s problem, it goes all across the country now.

Idioms and phrases with across:
→ run across, to simply run through something fast, but also to meet or find someone (or something) by accident, not intentionally: And then, he just ran across this mud and disappear in the forest! Can you believe that?
Last week I ran across my roommate from the dormitory. We haven’t seen each other for years!
→ put (yourself) across, to express yourself in such a way that everybody understands what is on your mind: Don’t get so nervous, you just have to put yourself across in front of the judge and then you are free.
→ come across like, to impress people in a particular way, or to appear for them as someone: What do you think about my presentation? Did I come across as a professional?

Incorrect spelling

Incorrect spelling

Incorrect spelling