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

Kyiv has rejected that concession in return for security guarantees intended to protect Ukraine from future Russian incursions. —Matthew Lee, Arkansas Online, 20 Dec. 2025

The incident comes amid a turbulent year for air travel, marked by high-profile safety scares including runway incursions, severe turbulence injuries, and the government shutdown worsening mounting strain on aviation systems during peak travel periods. —Alaa Elassar, CNN Money, 13 Dec. 2025

Mamdani’s endorsement of Lander marked the mayor-elect’s most high-profile incursion into national politics since his stunning victory. —Anthony Izaguirre, Fortune, 11 Dec. 2025

The motive behind the incursion is also not yet known. —Christopher McFadden, Interesting Engineering, 6 Dec. 2025

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