coincidentally

adverb

co·​in·​ci·​den·​tal·​ly (ˌ)kō-ˌin(t)-sə-ˈdent-lē 

-ˈden-tə-lē

1

: in a coincidental manner : by coincidence

lonely singles who meet coincidentally and click

—People

2

: it is or seems coincidental that

coincidentally, the dog died exactly one year after his owner did

Synonyms

• coincidently
• concurrently
• simultaneously

Examples of coincidentally in a Sentence

the final stages of the Napoleonic Wars were fought coincidentally with the U.S.-British conflict known as the War of 1812

Recent Examples on the Web

O’Brien has also steered the organization with a firm hand through its most turbulent moments, including the pandemic, which, coincidentally became a big turning point in its growth trajectory. —Katie Abel, Footwear News, 23 Oct. 2025

The band, which still doesn’t include Richie Sambora, will be performing four nights at Madison Square Garden in July — the same month as Rush’s quartet of reunion shows, coincidentally — before jetting off for three additional dates in Ireland, Scotland, and England. —Devon Ivie, Vulture, 22 Oct. 2025

Mary Miller tasted the pie made by a friend, coincidentally also a Mary Miller. —Pervaiz Shallwani, Bon Appetit Magazine, 21 Oct. 2025

Sadly, Salli died this past September and Linda died coincidentally a few months before her. —Letters To The Editor, San Diego Union-Tribune, 20 Oct. 2025

Word History

Etymology

coincidental + -ly entry 2

First Known Use

1837, in the meaning defined at sense 1

Rhymes for coincidentally

• environmentally
• experimentally
• accidentally
• detrimentally
• fundamentally
• governmentally
• incidentally
• incrementally
• instrumentally
• sentimentally
• temperamentally
• mentally