coincidentally

adverb

co·​in·​ci·​den·​tal·​ly (ˌ)kō-ˌin(t)-sə-ˈdent-lē 

-ˈden-tə-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

• coincidently
• concurrently
• contemporaneously
• simultaneously
• together

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

Khloe coincidentally posted to me the night before my surgery, and ultimately ended up paying for the procedure given how much my sales skyrocketed afterwards. —Newsweek Staff, MSNBC Newsweek, 31 May 2025

Both these signal an effort to reframe our national story, emphasizing a return to the kind of unbridled economic freedom that once characterized the country’s history, and coincidentally compromised many of America’s most dramatic wild spectacles. —Dan Flores, Time, 29 May 2025

This person’s crush probably has nothing to do with the grocery employee but everything to do with a rush of brain chemicals that happened to occur in their particular brain coincidentally at that moment and in that space. —R. Eric Thomas, Mercury News, 28 May 2025

Perhaps not coincidentally, Chloe has grown up to be a celebrated journalist and activist, while Nikki is a recovering addict whose son has been raised by Chloe. —Alan Sepinwall, Rolling Stone, 26 May 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