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 two split briefly in January 2025, but they were photographed three months later, coincidentally leaving the same Nobu restaurant. — Andrea Flores, Los Angeles Times, 5 Nov. 2026

Not coincidentally, the movie hits DVD, Blu-ray, and 4K Ultra HD on November 17. — Anne Thompson, IndieWire, 3 Nov. 2026

And, coincidentally, both men’s stump schedules have sent them to places that may prove crucial to anyone with White House ambitions. — Philip Elliott, Time, 2 Nov. 2026

Somewhat coincidentally that happened at Empower Field at Mile High. — Pete Grathoff, Kansas City Star, 2 Nov. 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