Invader: Definition, Usage & Key Examples

Meaning 1：intruder (invader)

invader 🔊

/ɪnˈveɪdə(r)/

Someone who comes into a place that is not theirs, using force, usually to take control.

Illustration of an invader army advancing on a medieval town, depicting hostile territorial entry.

intruder 🔊

➕

/ˈɪntruːdə(r)/

A person or group that forces entry into another's territory, often with hostile intent.

📁 Category：Culture & History 🔖 Level：Elementary

📘 Details & Usage

📖 Root Explanation

From Latin 'in-' (into) + 'vadere' (to go). Literally 'one who goes into'.

💡 Mnemonic

Think: 'IN'to a place + 'VADER' (like Darth Vader, a powerful foe). An invader forces in like a dark lord.

📖 Example

In the historical documentary, the narrator described the foreign army as a ruthless invader attacking the city walls. 🔊 In the historical documentary, the narrator described the foreign army as a ruthless intruder attacking the city walls.

🔗 Collocations

foreign invader – An intruder from another country.

alien invader – Often used in science fiction for hostile extraterrestrial beings.

military invader – An armed force entering a territory by force.

🔄 Synonyms

aggressor (n.) – A person or country that attacks first.

conqueror (n.) – One who successfully overcomes and takes control.

occupier (n.) – One who seizes and holds a place by force.

🚫 Antonyms

defender (n.) – One who protects against attack.

protector (n.) – A guardian or keeper from harm.

native (n.) – A person born in or originally from a place.

🌱 Derivatives

invade (v.) – To enter forcefully as an enemy.

invasion (n.) – The act of invading.

invasive (adj.) – Tending to intrude or spread aggressively.

📖 Cultural Story

Derived from the Latin verb 'invadere', meaning 'to go into, enter upon, attack'. Historically used to label foreign military forces entering a territory, this term is now often used metaphorically in discussions about invasive species, cybersecurity threats, or cultural influence.