Synonyms for

Infiltration

Verb / ˌɪnfɪˈltreɪʃʌn / Another word for infiltration — explore alternatives below. For syllable breakdowns and pronunciation, see this word on Syllablesworld.

Definition

the act or process of infiltrating; a gradual or stealthy entrance or penetration into a place or situation in order to acquire secret information or cause damage

Synonyms & similar words

percolation penetration invasion incursion permeation inroad intrusion insertion infusion impregnation interpolation intercalation interposition ingression immersion osmosis filtration seepage oozing leakage exudation

Synonyms by register

Formal

penetration intrusion encroachment permeation

Informal

sneaking in getting in breaking in slipping in

Literary

insinuation permeation seepage

Antonyms

withdrawal retreat evacuation exfiltration departure exit

Common collocations

  • enemy infiltration
  • infiltration of troops
  • infiltration of drugs
  • infiltration of ideas
  • infiltration of water
  • infiltration of capital
  • infiltration of the market

Word family

noun infiltration
verb infiltrate
adjective infiltrating
adverb infiltratingly

Usage note

Often used in military or espionage contexts to describe secret entry. Can also refer to the gradual spread of something undesirable, like ideas or substances.

Example sentences

  1. The infiltration of water into the soil is important for plant growth.
  2. The police discovered an infiltration of criminals into the city.
  3. The spy's infiltration into the enemy's headquarters was successful.
  4. The infiltration of air into the room made it easier to breathe.
  5. The infiltration of oil into the ocean can harm marine life.

Quotes

  • Infiltration is the process by which water on the ground surface enters the soil.
  • Infiltration is the act of entering or gaining access to something secretly or gradually.
  • Infiltration is the process of gradually entering or being introduced into a place or system.

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