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

Another loss Sunday, coincidentally against the Texans, will make this a serious panic situation because jobs are at stake. — Armando Salguero Outkick, FOXNews.com, 22 Sep. 2026

After their first two dates, Allen accepted a position at a training program at Toronto’s Hospital for Sick Children while Smith coincidentally filmed the movie Kaleidoscope, also in Toronto. — Marina Watts, Entertainment Weekly, 14 Sep. 2026

The earrings were made in memory of Renton’s daughter, Issy Phipps, who took her own life on April 29, 2023—coincidentally, William and Kate’s wedding anniversary. — Rachel Burchfield, InStyle, 11 Sep. 2026

Former employees said Monday was coincidentally the day their layoffs from the hospital became official after months of furlough. — Lisa Schencker, Chicago Tribune, 1 Sep. 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