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if

if

∞ 1.0
To introduce a question asking whether something is true or happened
  • subordinating conjunction
  • /ɪf/
: si
  • Just tell me if you're there.
  • ask if
  • know if
  • find out if

And she said, ask them if they'll stand with us.

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Examples

  • Let me see if I can answer it.

  • Can you tell me if this is the correct address?

  • So he asked me if I would hold his hand.

  • Well, how do you know if you are happy?

  • What is the point if we are always here?

  • I wonder if I know what you mean.

  • There is a button to click if you are pregnant.

  • In this study, we attempt to investigate if such a difference exists.

    Academic text (2011)
  • You know, I'm not really sure if I'm into that.

  • Hey, I was wondering if I could borrow some fishing gear?

Synonyms

whether
vsif
∞ 1.0

To show two possible choices, often yes or no

is used to introduce indirect yes or no questions in reported speech

Idioms

∞ 2.1

In a way that makes something seem true though it may not be

460 2.9

Saying something may be even more true than first said

427 3.0

To wish the past had been different because you regret it

33 3.9

When it is necessary to do something

33 9.9

A strong way to say you refuse or do not believe something

21 7.9

Showing a particular quality very strongly

When no one likes one choice more than another

if you say so
  • Informal
15 7.7

Accept what someone says while showing doubt or little interest

2 8.7

Accept a criticism if it applies to you

1 9.4

News that is violent or shocking gets more attention and appears first

1 8.9

A very angry stare that seems like it could hurt someone

1 9.9

To say firmly that what you say is true

1 9.9

Only people with the same knowledge or experience understand this

1 7.0

Challenge someone to try to reach or pass you

Act with great energy and not worry about the future

Any choice you make leads to bad results

big if true
  • Texting
9.2

Something that would be very important if it is true

A situation where any choice leads to trouble or criticism

Very sharp or harsh in a way that would hurt someone if it could

A phrase people say to show talking about impossible what-ifs is pointless

An idea that a place could tell stories from its past

A person who is very calm and not easily upset, even in a dangerous situation

Compounds

A 2002 American film by Steven Spielberg starring Leonardo DiCaprio and Tom Hanks

Surface Forms

if main

Etymology

If used to mean 'whether' also comes from Old English gif, where people used it to introduce a yes/no idea. That's why if can introduce an indirect question, meaning 'whether'.