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 mount, when finished, will stand 128 feet (39 meters) tall (coincidentally the size of the ELT's entire mirror) and weigh 2,600 tons. —Keith Cooper, Space.com, 17 Apr. 2026

City News Café only coincidentally happens to share the name of the City News Bureau, the legendary Chicago wire service that provided Chicago newspapers and later TV and radio stations with police and fire, courtroom, and local government news dispatches. —Adam Harrington, CBS News, 16 Apr. 2026

And, perhaps not so coincidentally, Kelce signed his contract at the Chiefs facility when Sadiq came for a visit. —Pete Grathoff, Kansas City Star, 16 Apr. 2026

Not-so-coincidentally, Brugler compares Fields to Pittman. —Zack Rosenblatt, New York Times, 15 Apr. 2026

Word History

Etymology

coincidental + -ly entry 2

First Known Use

1837, in the meaning defined at sense 1

Rhymes for coincidentally

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