1

if

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conjunction \ˈif, əf\

Definition of if

  1. 1a :  in the event thatb :  allowing thatc :  on the assumption thatd :  on condition that

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

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

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

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

if anything

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

Origin and Etymology of if

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


2

if

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noun \ˈif\

Definition of if

  1. 1 :  condition, stipulation the question … depends on too many ifs to allow an answer — Encounter

  2. 2 :  supposition

Examples of if in a Sentence

  1. There are too many ifs in this proposal.

  2. your conclusion may turn out to be accurate, but you're postulating a lot of ifs

Recent Examples of if from the Web

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.

First Known Use of if

1513



IF Defined for English Language Learners

if

play
conjunction

Definition of if for English Language Learners

  • —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

play
noun

Definition of if for English Language Learners

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


IF Defined for Kids

if

play
conjunction \ˈif, əf\

Definition of if for Students

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

  2. 2 :  whether 1 See if they have left.

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


Medical Dictionary

IF

abbreviation

Medical Definition of IF

  1. interferon



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