- Invade is defined as to enter using force or violence, or to crowd into a place.
An example of to invade is the 1939 Defensive War when Nazi Germany entered Poland from the north, south and west.
- to enter forcibly or hostilely; come into as an enemy
- to crowd into; throng: tourists invading the beaches
- to intrude upon; infringe; violate: to invade someone's privacy
- to enter and spread through with harmful effects: a body invaded by disease
Origin: Middle English invaden from Classical Latin invadere from in-, inch(es) plush vadere, to come, go: see wade
- invader noun
Used by arrangement with John Wiley & Sons, Inc.
verb in·vad·ed, in·vad·ing, in·vades verb, transitive
- To enter by force in order to conquer or pillage.
- To encroach or intrude on; violate: “The principal of the trusts could not be invaded without trustee approval” (Barbara Goldsmith).
- To overrun as if by invading; infest: “About 1917 the shipworm invaded the harbor of San Francisco” (Rachel Carson).
- To enter and permeate, especially harmfully.
Origin: Middle English, from Old French invader, from Latin invādere : in-, in; see in-2 + vādere, to go.
- in·vadˈer noun