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

• 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

Elsewhere along the alliance’s eastern edge, Latvia, Lithuania and Romania have all reported Russian drone incursions. —David Brennan, ABC News, 15 Sep. 2025

Overshadowed in the news was the Russian drone incursion into Polish airspace, a slight increase in inflation, and Israel’s bombing of a building in Qatar where Hamas leaders have been living in luxury for at least a decade. —Paul Bedard, The Washington Examiner, 13 Sep. 2025

Poland has became highly attuned to its air security after an unprecedented incursion of about 20 Russian drones earlier this week. —Bloomberg News, Boston Herald, 13 Sep. 2025

And in comments to state media after the drone incursion, Belarusian President Alexander Lukashenko also appeared to deflect blame. —Nathan Hodge, CNN Money, 12 Sep. 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