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

This coincidentally was the final game played between the teams prior to Monday’s matchup in Vegas. —Gary Bedore, Kansas City Star, 23 Nov. 2025

Judge spent two years as the New York Giants coach (and, coincidentally, is a Mississippi State alum). —Andrew McCarty, MSNBC Newsweek, 21 Nov. 2025

The maid of honor's brother coincidentally scheduled his ceremony to take place one day before the Redditor's wedding, which is the day of her rehearsal. —Ashlyn Robinette, PEOPLE, 21 Nov. 2025

Bareilles came to know Gibson and get involved in the project after having been a fan of their poetry and, coincidentally, in Colorado at the same time Gibson was doing one final live performance there, captured in the film. —Chris Willman, Variety, 14 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