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

And here’s the leaderboard again, which, coincidentally, is the tee times list in reverse order. — Alex Kirshner, New York Times, 17 July 2026

Nolan’s take on this scene alludes to one of Francisco de Goya’s Black Paintings, Saturn Devouring His Son—which, probably not coincidentally, is another modern adaptation of a classical work. — Natasha O'Neill, Vanity Fair, 16 July 2026

Martelly’s return to Haiti coincidentally came on the same day that another former Haitian president, Jean-Bertrand Aristide, commemorated a birthday. — Jacqueline Charles, Miami Herald, 15 July 2026

The grassroots effort, which set an initial goal of $100,000, mainly to build awareness and cover expenses, got a major boost last Thursday – coincidentally the same day that the Puck item appeared. — Dade Hayes, Deadline, 14 July 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