Correct spelling


Correct spelling, explanation: thoroughfare may seem incorrect, as currently thorough has a slightly different meaning, but it’s actually a predecessor of through. Because of that, an old English word stayed true to its origins and didn’t change.

Definition of thoroughfare:
1. A road, an important way of passage (by land or water)
The Brooklyn Bridge is one of the most famous thoroughfares connecting two parts of New York City.
2. A way of passage allowing to get from one place to another
They are directing a move on my street, so this week there is no thoroughfare there.

Incorrect spelling


Incorrect spelling, explanation: some dictionaries consider throughfare to be incorrect, while some only note it as an obsolete term. Technically, it conveys the same meaning, but in general, thoroughfare is the preferred, and correct form.