while

American  

[hwahyl, wahyl] / ʰwaɪl, waɪl /

noun

1. a period or interval of time.

   to wait a long while;

   He arrived a short while ago.

2. Archaic. a particular time or occasion.

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conjunction

1. during or in the time that.

2. throughout the time that; as long as.

3. even though; although.

   While she appreciated the honor, she could not accept the position.

4. at the same time that (showing an analogous or corresponding action).

   The floor was strewn with books, while magazines covered the tables.

preposition

1. Archaic. until.

verb (used with object)

whiled, whiling

1. to cause (time) to pass, especially in some easy or pleasant manner (usually followed byaway ).

idioms

1. worth one's while, worth one's time, trouble, or expense.

   The art exhibition that opened yesterday isn't worth your while.

2. all the while. see all the while.

while British  

/ waɪl /

conjunction

1. (subordinating) at the same time that

   please light the fire while I'm cooking

2. (subordinating) all the time that

   I stay inside while it's raining

3. (subordinating) in spite of the fact that

   while I agree about his brilliance I still think he's rude

4. (coordinating) whereas; and in contrast

   flats are expensive, while houses are cheap

5. (subordinating; used with a gerund) during the activity of

   while walking I often whistle

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preposition

1. dialect another word for until

   you'll have to wait while Monday for these sheets

   you'll never make any progress while you listen to me

noun

1. (usually used in adverbial phrases) a period or interval of time

   once in a long while

2. trouble or time (esp in the phrase worth one's while )

   it's hardly worth your while to begin work today

3. at that time

   he was working the while

while More Idioms  

More idioms and phrases containing while

• a while back
• all the time (while)
• every now and then (once in a while)
• fiddle while Rome burns
• get out while the getting is good
• in a while
• make hay while the sun shines
• once in a while
• quit while you're ahead
• strike while the iron's hot
• worth one's while

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Usage

It was formerly considered incorrect to use while to mean in spite of the fact that or whereas , but these uses have now become acceptable

Etymology

Origin of while

First recorded before 900; Middle English; Old English hwīl; cognate with Dutch wijl, German weile, Old Norse hvīla, Gothic hweila

Explanation

While describes a length of time. If you were describing a first date, you might say, "We sat there for a while in an incredibly awkward silence." Use the word while to talk about an unspecific period of time, like when you ask your friend if you can borrow his notebook for a while. While is also a conjunction that describes things that happen at the same time, like crying while watching a very sad movie. The Old English root of while, hwil, is interesting because the w and the h are switched, but the meaning is the same: a space of time.

Example Sentences

"We discovered that the body's fat-making process is driven by LIFR. While young mice don't require this signal to make fat, older mice do," explained Wang.

From Science Daily • Jun. 27, 2026

While there is an opportunity for smart glasses to become a defining wearable of the AI era, she doesn’t believe they’ll replace smartphones.

From MarketWatch • Jun. 27, 2026

While some of these creations have been commissioned by researchers, most hang in the window of her house.

From Slate • Jun. 27, 2026

While literature may give us the most vivid and honest record of the American experience, our architecture gives us the most idealistic.

From The Wall Street Journal • Jun. 27, 2026

While the auntie filled the second fancy stainless-steel cooler, Maggie glanced at the clock on the kitchen wall.

From "Legendary Frybread Drive-In" by Cynthia Leitich Smith

Related Words

• bit
• moment
• period
• time