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• if
  if

  conjunction

  in case that; granting or supposing that; on condition that.
• IF
  IF

  abbreviation

  intermediate frequency

if

¹ American  

[if] / ɪf /

conjunction

1. in case that; granting or supposing that; on condition that.

   Sing if you want to. Stay indoors if it rains. I'll go if you do.

2. even though.

   an enthusiastic if small audience.

3. whether.

   He asked if I knew Spanish.

4. (used to introduce an exclamatory phrase).

   If only Dad could see me now!

5. when or whenever.

   If it was raining, we had to play inside.

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noun

• ifs
  plural

1. a supposition; uncertain possibility.

   The future is full of ifs.

2. a condition, requirement, or stipulation.

   There are too many ifs in his agreement.

idioms

1. ifs, ands, or buts, reservations, restrictions, or excuses.

   I want that job finished today, and no ifs, ands, or buts.

if ² American  

Or IF

Radio.

1. intermediate frequency.

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if ¹ British  

/ ɪf /

conjunction

1. in case that, or on condition that

   if you try hard it might work

   if he were poor, would you marry him?

2. used to introduce an indirect question. In this sense, if approaches the meaning of whether

3. even though

   an attractive if awkward girl

4. 1. used to introduce expressions of desire, with only

      if I had only known

   2. used to introduce exclamations of surprise, dismay, etc

      if this doesn't top everything!

5. as it would be if; as though

   he treats me as if I were junior to him

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noun

1. an uncertainty or doubt

   the big if is whether our plan will work at all

2. a condition or stipulation

   I won't have any ifs or buts

IF ² British  

abbreviation

1. intermediate frequency

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if More Idioms  

More idioms and phrases containing if

• (if) push comes to shove
• as if
• damned if I do, damned if I don't
• make as if to
• no ifs or buts
• nothing if not
• what if

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Usage

If meaning “whether,” as in I haven't decided if I'll go, is sometimes criticized, but the usage is long established as standard.

Synonym Usage

If, provided, providing imply a condition on which something depends. If is general. It may be used to indicate suppositions or hypothetical conditions (often involving doubt or uncertainty): If you like, we can go straight home. If I had known, I wouldn't have gone. If may mean even though: If I am wrong, you are not right. It may mean whenever: If I do not understand, I ask questions. Provided always indicates some stipulation: I will subscribe ten dollars provided ( on the condition ) that you do, too. Provided he goes, we can go along. Providing means the same as provided, that is, just in case some certain thing should happen: We will buy the house, providing ( provided ) we can get a mortgage.

Other Word Forms

Noun Inflected Forms

• ifs
  plural

Etymology

Origin of if

First recorded before 900; Middle English, variant of yif, Old English gif, gef; akin to Old Norse ef “if,” Gothic ibai “whether,” Old High German iba “condition, stipulation”

Example Sentences

See Examples For:

if IF ifs

That’s what makes our songs Neo, and if we don’t like certain versions of it, we will do another recording of it and do some modifications.

From Los Angeles Times ● Aug. 25, 2026

This restriction holds true even if the government’s own delay is the reason the lawsuit arrived so late.

From Slate ● Aug. 25, 2026

The Camino de Santiago, a medieval pilgrimage in northern Spain, has a way of making things seem normal that, elsewhere, might make a reasonable person wonder if you’re OK.

From The Wall Street Journal ● Aug. 25, 2026

Another place where Dulli’s vocals are at the forefront is on “My Lover,” where the lead vocal has a stylized texture that feels like Dulli even if it doesn’t sound like him.

From Salon ● Aug. 25, 2026

But I think she’d love it if, just once, her nana looked at her with the same pride with which she looks at her other grandchildren.

From "Split the Sky" by Marie Arnold

It’s what you put there because IF this thing works, that slice changes everything.

From MarketWatch ● Nov. 23, 2025

Miguel Rojas, 37, IF, 1.9, 19.1: Should Rojas retire after helping the Dodgers to a second consecutive World Series, he’ll undoubtedly land a job as a coach or manager.

From Los Angeles Times ● Nov. 3, 2025

IF Metall is not entirely alone in its fight.

From BBC ● Oct. 26, 2025

He told a publicist who worked at Wayfarer, “We should have a plan for IF she does the same when movie comes out. Plans make me feel more at ease.”

From Salon ● Dec. 23, 2024

AS IF SHE DIDN’T just drop a bombshell on us, Ama turns and whisks out of the office, closing the door behind her.

From "Kwame Crashes the Underworld" by Craig Kofi Farmer

On Wednesday, Wenders said the actress "should have been better protected back then", adding: "For that, I apologise to you, Nastassja, unreservedly, no ifs and buts."

From BBC ● Jun. 3, 2026

I can sometimes get lost in the what ifs.

From Los Angeles Times ● May 18, 2026

The money is now yours, no ifs, ands, or buts.

From Salon ● Mar. 24, 2026

Don’t look back with regret or what ifs.

From MarketWatch ● Jan. 5, 2026

She didn’t wait for any ifs, ands, or buts from me.

From "Moon Over Manifest" by Clare Vanderpool