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

Hill, coincidentally a Duke product like Flagg and Knueppel, was that season’s leading All-Star game vote-getter among all players, not just rookies. —Brad Townsend, Dallas Morning News, 28 Mar. 2026

No 70-year-old head coach has won a national championship since Lute Olson with Arizona in 1997, which was coincidentally the last time that a school west of Waco, Texas, won the national title. —Lev Akabas, Sportico.com, 26 Mar. 2026

The podcast aesthetic—casual, long-winded, sometimes profane—directly opposes, perhaps not coincidentally, the sterility and bizarre right-this-minute quality of cable news, on which everything seems incomplete and therefore manipulative, and yet somehow endless. —Jay Caspian Kang, New Yorker, 24 Mar. 2026

The Automated Ball-Strike (ABS) challenge system, which has been tested in the minor leagues and MLB spring training, will make its debut Wednesday night in the MLB season opener, when the San Francisco Giants play host to the New York Yankees — coincidentally in America’s high tech capital. —Juliette Arcodia, NBC news, 24 Mar. 2026

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