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whether or not vs if or not

Both "whether or not" and "if or not" are correct constructions in English, but they are used in different contexts. "Whether or not" is used when presenting two or more alternatives or possibilities, while "if or not" is used to express a condition or a hypothetical situation.

Last updated: March 19, 2024 • 1159 views

whether or not

This phrase is correct and commonly used in English to present alternatives or possibilities.

Use "whether or not" when you are presenting two or more alternatives or possibilities. It is often used to introduce a clause that expresses a choice or a doubt.

Examples:

I will go to the party whether or not you come.
She is unsure whether or not she should accept the job offer.
He needs to decide whether or not to buy a new car.
We are discussing whether or not to invest in the stock market.
The teacher will determine whether or not the students have understood the lesson.

Show examples from the web [+]

Also, whether or no. Regardless of whether, no matter if. For example, Whether or not it rains, we're going to walk to the theater, or She plans to sing at the ...
Sep 23, 2010 ... This will depend on whether or not he's suitable for the job. It is still not defined whether we're following that approach. It is still not defined ...
I am confused about whether. When is it correct to use the phrase whether or not, and when is it correct to just use whether? For example, which of the following ...
see definition of whether or not. Font size. X. Aa. Aa. Aa. Aa. Aa. show. all, adverb ... Synonyms for whether or not. adv in any case. certainly star · positively star.

Alternatives:

regardless of whether
irrespective of whether
no matter whether
if
in case

if or not

This phrase is correct but less commonly used in English. It is typically used to express a condition or a hypothetical situation.

Use "if or not" to express a condition or a hypothetical situation. It is often used in conditional sentences or when discussing possibilities.

Examples:

If or not you finish your homework, you can go out with your friends.
I'm not sure if or not I will be able to attend the meeting.
If or not it rains tomorrow, we will still have the picnic.
She asked him if or not he wanted to join her for dinner.
If or not they win the game, they will have given their best effort.

Show examples from the web [+]

Not: Can you tell me if or not you're interested … We use whether, not if, after prepositions: [talking about a trip to Australia for a year]. We're not interested in ...
Jan 13, 2015 ... I don't know whether or not she's working. Notice that if or not XYZ is not grammatical: *I don't know if or not she's working. (ungrammatical).
Contrast connectors--if and whether; determine function: stating a condition or an alternative; identify word choice within a given context; 12 questions.
May 11, 2008 ... I don't know whether/*if or not I'm going. (but see below). Point 6 (somewhat off- topic). A fair number of usage manuals tell you to jettison the or ...

Alternatives:

if
whether
in case
provided that
assuming that

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