SINCE 1828

An Encyclopædia Britannica Company

all hours

plural noun

Definition of all hours

: a very late time stayed up until all hours

First Known Use of all hours

1668

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See words that rhyme with all hours

Seen and Heard

What made you want to look up all hours? Please tell us where you read or heard it (including the quote, if possible).

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WORD OF THE DAY

depredate

play

to plunder or ravage

Words at Play

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We're Down With You Being—or Your Being?—a Square

It's about (you? your?) having your say.

Devilish Words

Don't blame a word use error on the devil.

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How 'Wonderful' Lost Its Sense of Wonder

A case of semantic bleaching

dog-covering-face

Don't Let Reading This Be Another 'Coulda' 'Shoulda' 'Woulda'

PSA: They're three separate words.

Ask the Editors

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Words of the Year: 1066

Or, Why Pig Meat is Called 'Pork' and Cow Meat is Called 'Beef'

How Often Is 'Biweekly'?

Don't get us started on 'bimonthly'

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Irregardless

It is in fact a real word (but that doesn't mean you should use it).

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Weird Plurals

One goose, two geese. One moose, two... moose. What's up with that?

Word Games

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Time Traveler Quiz: Which Word Came First?

Which word entered the English language first?

Take the quiz

Name More Food!

Test your knowledge of food vocabulary!

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Name That Thing

Name That Thing

Test your visual vocabulary with our 10-question challenge!

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Syn City

Build a city of skyscrapers—one synonym at a time.

Play the game