Correct spelling, explanation: when you wonder about the spelling of the word business, the most important thing to remember is that the base word here is super simple – busy. The word business consists of the main part busy and the noun suffix -ness, and in the process, the y becomes i. This is the most important thing to remember if you’re unsure about the spelling.

Definition of business:
noun
1. person’s occupation, profession
My family has been in the restaurant business for over 50 years.
2. activity of commercial nature
We are an international company that conducts business with many foreign
concerns.
3. something that needs to be done (informal)
I moved out of this city many years ago but I came back to finish the business by selling my old house.

Idioms with business:
get down to business – to start doing something that needs to be done
I’d love to chat more, but we met here to talk about sales, so let’s get down to business, and we can grab dinner afterward.
to make something someone’s business – to involve someone in a situation they were previously not a part of
Nobody asked me to, but I made it my business to help out my parents when they were in debt.

Incorrect spelling, explanation: bisness may seem convincing because this spelling sort of fits the pronunciation. But what is really important here, is the structure of this word. The proper spelling, business, is actually created on the base word busy and the typical noun-creating suffix -ness. As is in many similar words, y changes to i in the process. So, if you ever wonder how to spell business and where it came from, here’s your answer.

Incorrect spelling

Incorrect spelling

Incorrect spelling

Incorrect spelling

Incorrect spelling

Incorrect spelling