V2 Vocabulary Building Dictionary
Definition: 1. to secretly pass into enemy-held territory; 2. to become a member of a group or organization with the intent of gathering information or doing harm--plant spies; 3. in chemistry, when fluid permeates through a substance
Synonyms: penetrate, besiege, bombard, access, pervade, saturate, percolate, permeate, worm in, join
Tips: Infiltrate is derived from the Latin filtrare, which means "to filter." Think of the way a filter keeps out anything unwanted. Infiltrate means "to pass through the filters" into someone else's territory.
The journalist infiltrated the secret society and exposed all its secrets in a controversial article. (penetrated, joined)
The spy successfully infiltrated the competing organization, bringing back much needed information. (penetrated, accessed)
The liquor infiltrated the sponge cake and made for a moist and delicious dessert. (permeated, saturated)
Our campsite was infiltrated by biting ants, and soon we all had ants in our pants. (besieged, penetrated)
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