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

Not coincidentally, midterm elections are five months away. — The Editorial Board, Chicago Tribune, 8 June 2026

All hell breaks loose at the table and, not so coincidentally, everyone looks to Porsha to diffuse things. — Ile-Ife Okantah, Vulture, 29 June 2026

Not coincidentally, this default has a lot in common with Anthropic’s own branding—beigey backgrounds, off-red highlight colors, big typefaces, lots of serifs and underlines. — Kyle Chayka, New Yorker, 24 June 2026

He was thrust into the side against Uruguay in the 2024 Copa America — after a similar public campaign, coincidentally — and had a poor game. — Jack Lang, New York Times, 25 June 2026

Word History

Etymology

coincidental + -ly entry 2

First Known Use

1837, in the meaning defined at sense 1

Rhymes for coincidentally

• accidentally
• detrimentally
• fundamentally
• governmentally
• incidentally
• incrementally
• instrumentally
• sentimentally
• temperamentally
• environmentally
• experimentally
• mentally