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

But black-coffee obsessives sometimes gravitate toward very light roasts, which are a bit more polarizing and, not coincidentally, can be harder to find. —Kelefa Sanneh, New Yorker, 6 Dec. 2025

Nix’s best two-game stretch of the season has come after that Houston-Vegas back-to-back, perhaps not coincidentally. —Luca Evans, Denver Post, 5 Dec. 2025

With Charlie Lindgren injured, Washington's backup goalie was Parker Milner, a 35-year-old retired minor-league goalie who occasionally practices with the Caps — and who coincidentally came along on the road trip. —CBS News, 5 Dec. 2025

Prior to their official first date, Biles and Owens coincidentally crossed paths in January 2019 during a Texans game. —Skyler Caruso, PEOPLE, 29 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