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        if
         conjunction
         
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        \ ˈif How to pronounce if (audio) ,  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 wishif 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 notdifficult if not impossible
         
        if anything 
        : on the contrary even : perhaps even                                                                if anything, you ought to apologize
          
        if
         noun
         
        \ ˈif How to pronounce if (audio) \
         
        Definition of if (Entry 2 of 2)
         
        1 : condition, stipulation the question … depends on too many ifs to allow an answer — Encounter
         
        2 : supposition
          
                    Synonyms                     More Example Sentences                       Learn More about if
          
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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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        Time Traveler for if
         Time Traveler 
        The first known use of if was                                 before the 12th century
         
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        Cite this Entry 
        “If.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/if. Accessed 7 Jul. 2020.
         
         
         
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        More Definitions for if 
          
        if
         conjunction
         
        How to pronounce if (audio)
         
        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
         
        How to pronounce if (audio)
         
        English Language Learners Definition of if (Entry 2 of 2)
         
        : something that is not certain : something that could either happen or not happen
         
        See the full definition for if in the English Language Learners Dictionary
         
          
        if
         conjunction
         
        \ ˈif How to pronounce if (audio) ,  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 wishIf only it would rain.
         
          
        IF
         abbreviation
         
        Medical Definition of IF
         
        interferon
         
         
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        More from Merriam-Webster on if 
        Thesaurus: All synonyms and antonyms for if 
        Rhyming Dictionary: Words that rhyme with if 
        Spanish Central: Translation of if 
        Nglish: Translation of if for Spanish Speakers 
        Britannica English: Translation of if for Arabic Speakers 
        Britannica.com: Encyclopedia article about if
         
        Comments on if 
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