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

Brodeur coincidentally pulled up the actual weeds on the property June 19, just before Dantona received the first non-compliance notice. — Ariane Lange, Sacbee.com, 18 Aug. 2026

Not coincidentally, at least in regards to my thesis here, all of Season 6 is driven by Buffy’s grief. — Emily Temple, Literary Hub, 18 Aug. 2026

Kerry is married to lawyer Billy Macon (Jason Ritter), whose father, William (Garret Dillahunt), is a local bigwig, with a cowboy militia and a wife, Zoe (Poorna Jagannathan), who possibly not coincidentally meets John in a bar. — Television Critic, Los Angeles Times, 14 Aug. 2026

The application is the one that has been hardest to instrument and, not coincidentally, the one where breaches are most consequential. — Aviv Mussinger, Forbes.com, 7 Aug. 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