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sleeper cell

noun

Definition of sleeper cell

: a terrorist cell whose members work under cover in an area until sent into action

First Known Use of sleeper cell

1968

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WORD OF THE DAY

opine

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to state as an opinion

Words at Play

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Drawing a Conclusion About "Sketchy"

How did "sketchy" come to describe creeps?

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What's the Singular of 'Scissors'?

A tricky, double-edged word origin.

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Great Words for Twilight and Darkness

Words for the goth in all of us

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Helium: This Word Brought to You by a Solar Eclipse

And by the Sun, with some help from Greek.

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?

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Name More Food!

Test your knowledge of food vocabulary!

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True or False?

Test your knowledge - and maybe learn something along the way.

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Add Diction

Build a chain of words by adding one letter at a time.

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