\ˈif, əf\

Definition of if 

(Entry 1 of 2)

1a : in the event that

b : allowing that

c : on the assumption that

d : on condition that

2 : whether asked if the mail had come I doubt if I'll pass the course

3 used as a function word to introduce an exclamation expressing a wish if it would only rain

4 : even though : although perhaps an interesting if untenable argument

5 : and perhaps not even few if any changes are expected often used with not difficult if not impossible

if anything

: on the contrary even : perhaps even if anything, you ought to apologize

if

noun
\ˈif \

Definition of if (Entry 2 of 2)

1 : condition, stipulation the question … depends on too many ifs to allow an answerEncounter

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Examples of if in a Sentence

Noun

There are too many ifs in this proposal. your conclusion may turn out to be accurate, but you're postulating a lot of ifs

Recent Examples on the Web: Noun

OOF: If the Senate manages to pass its health-care bill -- and that's a mammoth IF -- the House seems ready to give it the nod, too, my colleague Paul Kane writes. Paige Winfield Cunningham, Washington Post, "The Health 202: Insurers join the din of opposition to the Senate health care bill," 17 July 2017 But if all goes as planned – a big IF in the restaurant business – Mark Kurlyandchik, Detroit Free Press, "‘Chef to the stars’ Max Hardy to open three Detroit restaurants – and doors for more black chefs," 12 July 2017 IF is also used both to connect the chips within the multi-chip module (MCM), and, in two processor configurations, to connect the two sockets. Peter Bright, Ars Technica, "AMD muscles in on Xeon’s turf as it unveils Epyc," 20 June 2017 Each chip in one socket is paired with a chip in the other socket, for four pairs total, with one IF link between each pair. Peter Bright, Ars Technica, "AMD muscles in on Xeon’s turf as it unveils Epyc," 20 June 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'if.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of if

Conjunction

before the 12th century, in the meaning defined at sense 1a

Noun

1513, in the meaning defined at sense 1

History and Etymology for if

Conjunction

Middle English, from Old English gif; akin to Old High German ibu if

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Dictionary Entries near if

IEP

Ieper

ieroe

if

Ifafa lily

if (at all) possible

if-bet

Phrases Related to if

no ifs and buts

no ifs, ands, or buts

Statistics for if

Look-up Popularity

Time Traveler for if

The first known use of if was before the 12th century

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More Definitions for if

English Language Learners Definition of if

 (Entry 1 of 2)

—used to talk about the result or effect of something that may happen or be true

—used to discuss the imaginary result or effect of something that did not happen or that is or was not true

—used to say that something must happen before another thing can happen

if

noun

English Language Learners Definition of if (Entry 2 of 2)

: something that is not certain : something that could either happen or not happen

\ˈif, əf\

Kids Definition of if

1 : in the event that If it rains we'll stay home.

2 : whether sense 1 See if they have left.

3 used to introduce a wish If only it would rain.

Medical Definition of IF 

interferon

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Comments on if

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