Of Course Not: Definition, Meaning, and Origin

Last Updated on
September 12, 2023

The idiom "of course not" is commonly used to say "no" solidly or emphatically. It is often used to express disbelief, denial, or rejection of something said or implied. It can also be used sarcastically or ironically to mean the opposite of what it says.

In short:

  • It expresses "no" with intensity or conviction.
  • It conveys a sense of incredulity, refusal, or opposition to something.

What Does "Of Course Not" Mean?

"Of course not" signifies a forceful or emphatic "no." It conveys a sense of disbelief, refusal, or opposition to something stated or suggested. Moreover, it can also be employed sarcastically or ironically to imply the contrary of what it says.

Where Does "Of Course Not" Come From?

The phrase "of course not" is a negative form of "of course," which means "not as expected" or "not naturally." The idiom's origin dates back to the late 16th century when it was used to contradict or deny something said or implied.

Historical Example

One of the earliest examples of the phrase "of course not" in print is from a 1599 comedy play by William Shakespeare called Much Ado About Nothing. In Act 4, Scene 1, Claudio accuses his bride-to-be Hero of being unfaithful and asks her father Leonato if he knew about it.

10 Examples of "Of Course Not" in Sentences

Here are some examples of how to use this idiom in sentences:

  • Did I cheat on the test? Of course not. I buckled down and studied hard for it.
  • Am I going to quit my job? Of course not! I am happy with my workmates.
  • Do you think he likes you? Of course not. He's just being friendly. Don't get your hopes up.
  • You're asking if I'm afraid of the dark? Shiver me timbers. Of course not!
  • For your sake, step up your game. Do you think I will help you? Of course not!
  • So you want to go downtown with me? Of course not. I know that you hate me.
  • Am I sad? Of course not. I don't care about what other people think.
  • Is it okay to start from scratch? Of course not. You should retrieve what is yours.
  • Are you feeling better now? Of course not. You are still groggy. Get well soon.
  • Do I still hate him? Of course not. I have moved on and am enjoying my life now.

Examples of "Of Course Not" in Pop Culture

Here are some examples of how this idiom has been used in various forms of pop culture:

  • In the 1994 movie Forrest Gump, Forrest asks Jenny if she loves him. She replies, "You don't want to marry me." He says, "Of course not. I'm not smart, but I know what love is." He uses the idiom to express his sincerity and devotion to her.
  • In the 2001 TV show Friends, episode "The One with the Red Sweater," Rachel tells Joey she is pregnant. He asks her if Ross is the father. She says, "Of course not. No, no, no." She uses the idiom to deny the truth, which she later reveals as accurate.
  • In the 2003 book Harry Potter and the Order of the Phoenix by J.K. Rowling, Harry asks Professor McGonagall if he can join the Order of the Phoenix. This secret organization fights against Lord Voldemort. She says, "Of course not. You're too young." She uses the idiom to refuse his request and explain the reason.
  • In the 2012 movie The Avengers, Loki asks Thor if he is ever not going to fall for his tricks. Thor says, "No, Loki. This time, I know you're lying." Loki says, "Are you ever not going to fall for that?" Thor says, "Of course not." He uses the idiom sarcastically to mock Loki's repeated attempts to deceive him.

Other Ways to Say "Of Course Not"

Here are some synonyms for the idiom:

  • No way
  • Absolutely not
  • Definitely not
  • Not at all
  • By no means
  • Never
  • Not in a million years
  • Not on your life
  • No chance

10 Frequently Asked Questions About "Of Course Not"

Here are some frequently asked questions about the idiom:

  • What does "of course not" mean?

The idiom "of course not" is commonly used to say "no" solidly or emphatically. It is often used to express disbelief, denial, or rejection of something said or implied.

  • What is the origin of the phrase "of course not"?

The phrase "of course not" is a negative form of "of course," which means "not as expected" or "not naturally." The idiom's origin dates back to the late 16th century when it was used to contradict or deny something said or implied.

  • What are some synonyms for "of course not"?

Some synonyms for "of course not" are "no way," "not at all," "by no means," "never," "not in a million years," and "no chance."

  • What are some antonyms for "of course not"?

Some antonyms for "of course not" are "of course," "yes," "absolutely," "definitely," "sure," "certainly," "always," "without a doubt," "by all means," and "yes indeed."

  • Is "of course not" rude or polite?

It depends on the tone, context, and intention of the speaker. "Of course not" can be rude or polite depending on how it is said and what it responds to.

  • Can "of course not" be used as a question?

Yes, "of course not" can sometimes be used as a question. It can be used to express surprise, doubt, or disbelief about something that is said or implied.

  • What is the difference between "of course not" and "of course"?

"Of course not" is a negative form of "of course," which means "not as expected" or "not naturally." On the other hand, "of course" is a positive term.

  • How do you use "of course not" in a sentence?

You may use it to respond to a yes/no question or statement that implies a yes/no answer. In addition, you can also use it to express disbelief, denial, or rejection of something that is said or implied.

  • How do you use sarcasm or irony with "of course not"?

Use it with a sarcastic or ironic tone, gesture, or facial expression to convey your attitude or emotion.

  • How do you say "of course not" in other languages?

Spanish: Por supuesto que no
French: Bien sûr que non
German: Natürlich nicht
Italian: Certo che no
Portuguese: Claro que não

Final Thoughts About "Of Course Not"

The idiom "of course not" is commonly used to say "no" strongly or emphatically. It is often used to express disbelief, denial, or rejection of something said or implied.

Here are some key points to remember about the idiom:

  • The term dates back to the late 16th century.
  • It is derived from the phrase "of course."
  • It can express disbelief, denial, or rejection of something.
  • It can also be used sarcastically or ironically to mean the opposite.
  • It has synonyms and antonyms.
  • It can be used with other words or phrases that modify its meaning or tone.

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