coincidentally

adverb

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

-ˈdent-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 of coincidentally

• 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

The exhibit, which coincidentally opened on the same day as McCartney’s show at the Pinnacle Theatre, features nearly 300 photos from McCartney’s personal archive, all taken between December 1963 and February 1964. —Daniel S. Levine, PEOPLE, 8 Nov. 2025

Not coincidentally, the 2022 selloff was also triggered by investors questioning its spending plans, ultimately sending the stock down 77% from a 2021 peak. —Bloomberg, Mercury News, 5 Nov. 2025

Tens of thousands of callous-handed firefighters and tender veterinarians each year are snubbed in favor of bankable Hollywood stars that, coincidentally, tend to bring attention to suffering magazines. —Choire Sicha, CNN Money, 4 Nov. 2025

Perhaps coincidentally, City and Chelsea contested that season’s Champions League final. —Chris Weatherspoon, New York Times, 3 Nov. 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