alternate
Americanverb (used without object)
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to interchange repeatedly and regularly with one another in time or place; rotate (usually followed bywith ).
Day alternates with night.
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to change back and forth between conditions, states, actions, etc..
He alternates between hope and despair.
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to take turns.
My sister and I alternated in doing the dishes.
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Electricity. to reverse direction or sign periodically.
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Linguistics. to occur as a variant in alternation with another form.
verb (used with object)
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to perform or do in succession or one after another.
to alternate comedy acts; to alternate jogging and walking.
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to interchange successively or regularly.
to alternate hot and cold compresses.
adjective
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being in a constant state of succession or rotation; interchanged repeatedly one for another.
Winter and summer are alternate seasons.
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reciprocal; mutual.
alternate acts of kindness.
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every second one of a series.
Read only the alternate lines.
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constituting an alternative.
The alternate route is more scenic.
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Botany.
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placed singly at different heights on the axis, on each side in succession, or at definite angular distances from one another, as leaves.
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opposite to the intervals between other organs.
petals alternate with sepals.
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noun
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a person authorized to fill the position, exercise the duties, etc., of another who is temporarily absent; substitute.
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Theater.
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either of two actors who take turns playing the same role.
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an understudy.
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verb
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(often foll by with) to occur or cause to occur successively or by turns
day and night alternate
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to swing repeatedly from one condition, action, etc, to another
he alternates between success and failure
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(tr) to interchange regularly or in succession
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(intr) (of an electric current, voltage, etc) to reverse direction or sign at regular intervals, usually sinusoidally, the instantaneous value varying continuously
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theatre to understudy another actor or actress
adjective
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occurring by turns
alternate feelings of love and hate
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every other or second one of a series
he came to work on alternate days
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being a second or further choice; alternative
alternate director
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botany
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(of leaves, flowers, etc) arranged singly at different heights on either side of the stem
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(of parts of a flower) arranged opposite the spaces between other parts Compare opposite
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noun
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Arranged singly at intervals on a stem or twig. Elms, birches, oaks, cherry trees, and hickory trees have alternate leaves.
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Compare opposite
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Arranged regularly between other parts, as stamens between petals on a flower.
Other Word Forms
- alternately adverb
- alternateness noun
- alternatingly adverb
- nonalternating adjective
- quasi-alternating adjective
- quasi-alternatingly adverb
- unalternated adjective
- unalternating adjective
Etymology
Origin of alternate
First recorded in 1505–15, alternate is from the Latin word alternātus (past participle of alternāre ). See altern, -ate 1
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
In this alternate past, a fatal blood virus, known informally as the Red Wind, has been ravaging the population for about a decade.
From Los Angeles Times • Mar. 26, 2026
Her posts alternate between lifestyle content and her football, catering for a broad and diverse following, but make her a target for those who seek to criticise.
From BBC • Mar. 22, 2026
Asian countries may tilt toward alternate sources of supply like the U.S.
From Barron's • Mar. 19, 2026
Although the ballot initiative has yet to pass, the threat of such a tax prompted many of the state’s ultrarich to rush to establish alternate residency before the onset of the new year.
From MarketWatch • Mar. 16, 2026
As long as we’re still making donuts in the alternate universe, I can deal.
From "A Place at the Table" by Saadia Faruqi and Laura Shovan
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.