incursion

noun

in·​cur·​sion in-ˈkər-zhən 

1

: a hostile entrance into a territory : raid

2

: an entering in or into (something, such as an activity or undertaking)

his only incursion into the arts

Synonyms of incursion

• invasion
• raid

Examples of incursion in a Sentence

an incursion into enemy airspace

there were incursions from the border every summer

Recent Examples on the Web

And, as Europe has felt more threatened by Russian incursions, a week ago NATO fighter jets destroyed a drone near Romania’s natural gas projects in the Black Sea. — Jordan Blum, Fortune, 5 Sep. 2026

The mere fact of people’s concern about AI, and their anxiety over its incursion into day-to-day life, may be a snapshot too. — Kaitlyn Tiffany, The Atlantic, 4 Sep. 2026

There also have been drone incursions in Estonia and Latvia resulting from Russia’s war in Ukraine. — Lorne Cook, Los Angeles Times, 2 Sep. 2026

There have also been drone incursions in Estonia and Latvia resulting from Russia’s war in Ukraine. — ABC News, 2 Sep. 2026

Word History

Etymology

Middle English, from Middle French or Latin; Middle French, from Latin incursion-, incursio, from incurrere

First Known Use

15th century, in the meaning defined at sense 1

Rhymes for incursion

• aspersion
• aversion
• conversion
• dispersion
• diversion
• eversion
• excursion
• immersion
• inversion
• perversion
• recursion
• reversion

Kids Definition

incursion

noun

in·​cur·​sion in-ˈkər-zhən 

: a sudden usually temporary invasion : raid