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

Perhaps not coincidentally, all three games took place shortly after DePaul fired its coach, Tony Stubblefield, leaving an interim coach in charge at the time. —The Editorial Board, Chicago Tribune, 16 Jan. 2026

The game had coincidentally been planned on the team’s home turf at the Hard Rock Stadium. —Anna J. Kaiser, Fortune, 16 Jan. 2026

The Nets were coincidentally in town — staying at the same hotel as the Nuggets, as a matter of fact — for a game against the Pelicans on Wednesday. —Bennett Durando, Denver Post, 14 Jan. 2026

Two of those three deals, coincidentally, were finalized and announced while the Astros were in spring training. —Chandler Rome, New York Times, 12 Jan. 2026

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