Why cant you find the word acraphobia in many English dictionarys?

You're right, you won't find "acraphobia" in most dictionaries. That's because it's not a real word.

The correct term for the fear of heights is acrophobia. The "a" in "acrophobia" comes from the Greek word "akron," meaning "peak" or "summit."

It's easy to see how someone might misspell it, especially if they're not familiar with the Greek root.

So, if you're looking for information about the fear of heights, be sure to use the correct spelling: acrophobia.