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

Even though the season’s still young, the Dolphins and the Chargers, who coincidentally have two former Dolphins head coaches on its offensive staff, are the NFL’s bottom-dwellers this season. — Omar Kelly, Miami Herald, 19 Oct. 2026

Not coincidentally, the 11/12 result is the only one of the 722 OpenAI papers released on October 6 to have been edited by a person. — Quanta Magazine, 19 Oct. 2026

American Symphony, Will & Harper, My Mom Jayne — all were showered with trophies by precursor awards ceremonies and, not coincidentally, all were DOA with voters in the doc branch. — Nate Jones, Vulture, 16 Oct. 2026

Six points from six games represents United's worst start in the Premier League era, and on Sunday comes a clash with fierce rival Leeds at Elland Road, coincidentally the setting for Amorim's final game. — ABC News, 15 Oct. 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