September

noun

Sep·​tem·​ber sep-ˈtem-bər 

səp-

: the ninth month of the Gregorian calendar

Examples of September in a Sentence

The weather has been very mild during the past two Septembers.

Recent Examples on the Web

The Furious is not out in as many theaters as other wide releases, but this is the first time it’s gone wide since its September 2025 debut at festivals. —Paul Tassi, Forbes.com, 12 June 2026

The public killing of the prominent conservative activist on a Utah university campus last September set off an avalanche of misinformation. —Andi Babineau, CNN Money, 12 June 2026

The students began construction last September, and finished the project in May. —Fort Worth Star-Telegram, 12 June 2026

While the federal takeover of the city’s police department ended in September, National Guard deployments have continued. —Fernando Cervantes Jr, USA Today, 12 June 2026

Word History

Etymology

Middle English Septembre, from Anglo-French & Old English, both from Latin September (seventh month), from septem seven — more at seven

First Known Use

before the 12th century, in the meaning defined above

Rhymes for September

• crewmember
• december
• dismember
• nonmember
• november
• remember
• ember
• member

Kids Definition

September

noun

Sep·​tem·​ber sep-ˈtem-bər 

səp-

: the ninth month of the year

Etymology

Middle English Septembre "the month of September," from Old English September and early French Septembre (both, same meaning), both from Latin September "the seventh month," from septem "seven"

Word Origin

The ancient Romans originally used a calendar which began the year with the month of March. The seventh month of the year was called September, from septem, a Latin word meaning "seven." The name was spelled Septembre when it was borrowed from early French into Middle English, but eventually the English spelling was changed to that of the original Latin.