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

Also in residence is roommate Susie (Thaddea Graham), a chirpy cosplayer — and coincidentally Jinx’s biggest fan — whose skills will become valuable as Margo, needing cash, sets off into the world of OnlyFans. —Television Critic, Los Angeles Times, 15 Apr. 2026

Ravensbergen is a rare southpaw as a right-catching goalie (coincidentally, as is Askarov). —Scott Wheeler, New York Times, 8 Apr. 2026

Not coincidentally, this is the current Russian position too. —Elizabeth Shackelford, Twin Cities, 8 Apr. 2026

Michigan, not coincidentally, ranks fourth in the nation in assists per game and is 21st in the nation in assists per field goals made. —Dana O’Neil, CNN Money, 7 Apr. 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