incursive Definition

incursion
noun

1. A brief or sudden attack made into enemy territory.

Thesaurus: foray, raid, infiltration, penetration, invasion, attack, inroad, irruption.
2. A damaging invasion into or using up of something. See also inroad.

Example: unexpected expenses which made an incursion into their savings
3. The action of leaking or running into something.

Derivative: incursive
adj

Making incursions; aggressive; invasive.

Etymology: 15c: from Latin incursio, from incurrere to incur or run into.