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Definition of invader

invader

/ɪnˈveɪ.dər/
in · vad · er
Adverb:invasively
•
Plural:invaders
•
Adjective:invasive
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invader Lexical Profile

invader Game Scores & Validity

• noun

1

A person, group, or nation that enters a country, region, or private space by force or without permission in order to conquer, occupy, or intrude upon it.

Example

"Ancient stone fortresses were constructed along the coastline to protect the local population from foreign invaders."

2

A foreign organism, such as a pathogen in a host body or a non-native species in an ecosystem, that enters and spreads rapidly to the detriment of the existing system.

Example

"The immune system produces specialized antibodies to identify and neutralize microscopic invaders before they cause illness."

Synonyms
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Antonyms
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• Rhymes for invader

• Nearby Words

inula
inundate
invade
invader
invalid
invalidate
invalidation

Word Origin & Etymology

Formed in late Middle English from the verb 'invade' (from Latin 'invadere', meaning 'to go into' or 'attack', combining 'in-' meaning 'into' and 'vadere' meaning 'to go' or 'walk') plus the agent suffix '-er'.

Cite this Entry

Wordmom. (2026). Definition of Invader. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/invader
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