Invades

Invades is the third-person singular present tense of the verb invade. The base verb invade comes from the Latin invadere, meaning to go in or to attack. In standard usage, invades refers to the act of entering another territory, jurisdiction, or space by force or without consent. It can describe military action, such as armies or paramilitary forces crossing borders, as well as non-military contexts where a person or group intrudes into space or affairs.

In a military and political sense, invasions are typically studied as events involving state actors or organized groups seeking to seize control, alter borders, or topple governments. International law recognizes sovereignty and prohibits aggression, though definitions and classifications vary; the term invade is often used descriptively rather than as a formal legal label. Historical invasions have shaped borders and alliances and can lead to prolonged conflict or occupation.

In ecology, the verb invade is used to describe the spread of non-native species into new ecosystems, where they may compete with or displace indigenous species. In everyday language, invades can describe intrusive behavior, such as privacy concerns when someone enters a private space or information realm.

Because invades is a conjugated form, it is grammatically paired with singular third-person subjects (he invades, she invades, it invades). Related terms include invasion, invasive, and invader, which cover the noun and adjectival forms of the concept.