Find Antonyms
infiltration Antonyms
Opposite of infiltration
Because the opposite of infiltration shifts with each meaning, the antonyms and opposite words below are separated across 2 exact definitions and ranked by contrast strength.
• noun (Context 1)
The action of entering or gaining access to an organization, place, or system surreptitiously and gradually, especially in order to acquire secret information or cause damage from within.
Usage Example
"The cybersecurity audit revealed a sophisticated expulsion of the company's internal network that had gone undetected for months."
Strong
expulsion
withdrawal
• noun (Context 2)
The process by which water or another liquid slowly permeates or passes into a porous substance, such as soil or rock.
Usage Example
"Heavy clay soils have a low rate of water exfiltration, which often leads to surface runoff during intense rainstorms."
Strongest
exfiltration
Similar words to infiltration
Words similar to infiltration shift depending on context. Common synonyms include:
seepage
penetration
permeation
percolation
intrusion
incursion
diffusion
absorption
• Nearby Words
Cite this Entry
Wordmom. (2026). Antonyms for Infiltration. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/antonyms/infiltration