if

¹

[ if ]

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.

noun

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.

if

²

or IF

Radio.

1. intermediate frequency.

IF

¹

abbreviation for

1. intermediate frequency

if

²

/ 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 if
   as it would be if; as though

   he treats me as if I were junior to him

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

Usage Note

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

Word History and Origins

Origin of if¹

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”

Word History and Origins

Origin of if¹

Old English gif; related to Old Saxon ef if, Old High German iba whether, if

Idioms and Phrases

Idioms

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

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

More idioms and phrases containing if

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

Synonym Study

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.

Example Sentences

For example, almond and vinegar became more intense when participants were happy or experienced a positive emotion, but if a person was even mildly stressed they perceived a less intense vinegar aroma, Loke said.

From Science Daily

But what happens if this special growth zone is lost due to an injury?

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"Children who feel or express emotions strongly may feel different from others, and if they are shamed for their anger, it could make it much worse," Clark said.

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If a child's anger becomes severe, frequent, or unmanageable, it may be helpful to consult a therapist or counselor.

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"First, using a simple blood test, diseases can be identified and diagnosed earlier. That means faster treatment and better patient outcomes. Second, it helps clinicians choose the most effective treatment plan. For example, if a clinician knows at the very earliest stage of cancer that it's metastatic, their approach to treating and managing the disease would be totally different than if they know the cancer is benign."

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