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

Perhaps not coincidentally, Russia invaded the former Soviet republic of Georgia later that year. —Anne Applebaum, The Atlantic, 11 May 2026

Not so coincidentally, Tombaugh, who discovered Pluto in 1930, was from Kansas, so Isaacman’s answer to a senator from that state isn’t terribly unexpected. —Phil Plait, Scientific American, 8 May 2026

Simon, not coincidentally, is also an admirer of Patton, at least from afar. —George Varga, San Diego Union-Tribune, 7 May 2026

Ballenger quickly recorded the moment the moose ran across the vacant lot outside her window, which, coincidentally, is part of a property her father, Travis Ballenger, a local real estate broker, is selling. —Moná Thomas, PEOPLE, 27 Apr. 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