invader
noun/ɪnˈveɪdə(r)/
/ɪnˈveɪdər/
- an army or a country that enters another country by force in order to take control of it; a soldier fighting in such an army
- a foreign invader
- They prepared to repel the invaders.
- (figurative) The white blood cells attack cells infected with an invader.
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invader