autumn

noun

au·​tumn ˈȯ-təm How to pronounce autumn (audio)
Synonyms of autumnnext
1
: the season between summer and winter comprising in the northern hemisphere usually the months of September, October, and November or as reckoned astronomically extending from the September equinox to the December solstice

called also fall

2
: a period of maturity or incipient decline
in the autumn of life

Examples of autumn in a Sentence

in the autumn of last year a magnificent New England autumn She went off to college in the autumn of 1999. When autumn came he planted grass.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Come in late spring or autumn for pleasant temperatures and all-day adventures. Stephanie Vermillion, Travel + Leisure, 17 May 2026 The story, now a video epistolary, begins in autumn, as blank screens marked only with dates abruptly interrupt numerous scenes — some of these cuts are funny in and of themselves — marking both the passage of time, and the proximity of Gianina’s eventual Christmas trip home. Siddhant Adlakha, IndieWire, 16 May 2026 Featuring a slim silhouette, swallowtail toe and heel-wrapping outsole, the sneaker was made in the heart of Montebelluna’s footwear district in Italy and was first introduced in the autumn/winter 2026 lookbook. Stephen Garner, Footwear News, 15 May 2026 The risk of bites will remain high through July, with additional tick activity in the autumn before the season settles for the winter. Finch Walker, USA Today, 15 May 2026 See All Example Sentences for autumn

Word History

Etymology

Middle English autumpne, borrowed from Anglo-French autompne, borrowed from Latin autumnus (also an adjective, "autumnal"), perhaps a borrowing from Etruscan

Note: Ernout and Meillet (Dictionaire étymologique de la langue latine) regard an Etruscan origin as definite ("sans doute") and compare the form to Vertumnus/Vortumnus, claimed by Varro to be an Etruscan god. (The Romans regarded Vertumnus as a god of the changing seasons, by association with the verb vertere "to turn.")

First Known Use

15th century, in the meaning defined at sense 1

Time Traveler
The first known use of autumn was in the 15th century

Cite this Entry

“Autumn.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/autumn. Accessed 21 May. 2026.

Kids Definition

autumn

noun
au·​tumn ˈȯt-əm How to pronounce autumn (audio)
1
: the season between summer and winter including in the northern hemisphere usually the months of September, October, and November

called also fall

2
: a time late in an existence
in the autumn of life
autumnal adjective

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