“Most Definitely” – Meaning & Correct Usage (+Examples)


“Most definitely” is one of those phrases that looks redundant to non-native speakers. “Most” and “definitely” don’t seem to work together, and yet native speakers will happily use it with no qualms. This article will explore what it means and how to use it.

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What Does “Most Definitely” Mean?

“Most definitely” means that someone is certain of something. “Most” is a modifier to emphasize the power of “definitely,” which means certainly. You use it when you are sure that you are correct or that something you believe in is correct, and you have no doubts.

Most Definitely

“Most” is a superlative word, and we always use it when we want to show that something is the best in comparison to something else. We use it as a modifier in this case because it shows that there are no doubts in our minds.

Native speakers use language like this to affirm their beliefs. It shows that they’re confident, and they trust their own understanding or ability with something.

Using a phrase like this is a great way to get another native speaker to trust you. Anyone who can trust their own beliefs or understandings to the level of “most definitely” is worth trusting.

Is “Most Definitely” Proper English?

“Most definitely” is proper English. It is correct and grammatical because it uses “most” to modify “definitely.” While it’s not the most formal choice because it doesn’t follow the suitable English rules, it’s still correct to use in many cases.

It works as a way to assure someone that you are certain of an outcome or situation.

We use “most” as a superlative to modify the adverb “definitely.” It’s such a common phrase for native speakers that it’s become a common and acceptable part of proper English.

While it’s not the most formal choice, there is nothing grammatically wrong with it.

Examples Of How To Correctly Use “Most Definitely” In A Sentence

Perhaps some of these examples will help you understand more about its use:

  1. This is most definitely the hardest thing I’ve ever had to do. I don’t know if I can keep going.
  2. You are most definitely not going to qualify for this event. I’m sorry, but you haven’t got it in you.
  3. I’m most definitely the guy for this job. You won’t find anybody else capable of doing what I can.
  4. You should most definitely sign up for this. I think you’d really benefit from it!
  5. I will most definitely check it out. You’ve convinced me, and I can’t imagine it will be bad.
  6. Most definitely, I will do that! You’ll have to remind me again later so that I don’t forget to sign up for it.
  7. We will most definitely come to visit you later in the week. It’s going to be so much fun!

Is “Most Definitely” Informal?

“Most definitely” is informal because it is a double affirmative. That means we use two positive statements to emphasize each other, which goes against many taught language rules. It’s usually better to avoid using this if you’re unsure about it formally.

With that said, many native speakers will use it formally and will not be questioned about it. It works well to reaffirm a certain opinion, stance, or position. Many people will use it to show their certainty without any doubts.

Does “Most Definite” And “Most Definitely” Mean The Same?

“Most definite” and “most definitely” can be interchangeable, but it’s not common for people to use “most definite.” It’s a much more informal phrase, and native speakers will only use it in speaking when they want to clarify “definite” as an adjective.

For the most part, “definite” is an adjective while “definitely” is an adverb, so the following are correct:

  • Adjective: That is the most definite answer I can give you.
  • Adverb: It is most definitely harder to do that than you think.

But, we can use them interchangeably when we want to use them as a responsive phrase:

  • Are you sure about that?
  • Most definite.
  • Are you certain?
  • Most definitely

“Most Definitely” – Synonyms

Finally, let’s check out some synonyms to see whether any of these appeal to you:

  • Without a shadow of a doubt
  • Without a doubt
  • Indubitably
  • There isn’t a doubt in my mind
  • It’s beyond question
  • No two ways about it
  • As sure as eggs is eggs