infiltration
Sneaking into somewhere
Infiltration is the act of entering or penetrating gradually, often secretly.
Water infiltrates soil; spies infiltrate enemy organizations.
The word applies to military tactics, espionage, and any gradual permeation: The infiltration of the compound took months of planning.
In medicine, infiltration describes fluid or cells spreading into surrounding tissue where they don't belong.
Slow fluid escape
- percolationLiquid passing through pores
- groundwaterWater in underground rock
- aquiferGroundwater-bearing geological formation
- saturationState of complete permeation
porosity · leaching · drainage · runoff · watershed · subsurface · recharge · hydraulic
Covert information gatherer
- moleSubterranean insectivore
- agentOne who acts independently
- undercoverSecretly engaged in espionage
- intelligenceMental ability, cognitive capacity
surveillance · counterintelligence · covert · clandestine · informant · tradecraft · dead-drop · cipher
Intentionally concealed
- undetectedNot discovered yet
- sneakingMoving to avoid detection
- evasionAct of escaping detection
- concealmentAct of hiding something
incognito · disguise · furtive · surreptitious · clandestine · shadowing · prowling · silent
Hostile territorial penetration
- reconnaissanceInformation-gathering before action
- guerrillaIrregular armed fighter
- raidSudden armed incursion
- ambushSurprise strike from concealment
flanking · breach · perimeter · insertion · sabotage · commando · patrol · advance
Subterranean insectivore
- plantBotanical organism
- insiderOne with confidential access
- subversionUndermining established authority
- sleeperOne at rest
asset · penetration · co-optation · compromise · embedded · cover · manipulation · turncoat
Composed of small units
- tissueDisposable soft paper
- lymphocyteImmune system white cell
- leukocyteInfection-fighting blood cell
- inflammationProtective tissue response
tumor · metastasis · edema · fatty · immune · pathological · biopsy · lesion
seepage
Slow fluid escape
- percolationLiquid passing through pores
- groundwaterWater in underground rock
- aquiferGroundwater-bearing geological formation
saturation · porosity · leaching · drainage · runoff · watershed · subsurface · recharge · hydraulic · absorption
spy
Covert information gatherer
- moleSubterranean insectivore
- agentOne who acts independently
- undercoverSecretly engaged in espionage
intelligence · surveillance · counterintelligence · covert · clandestine · informant · tradecraft · dead-drop · cipher · decryption
covert
Intentionally concealed
- undetectedNot discovered yet
- sneakingMoving to avoid detection
- evasionAct of escaping detection
concealment · incognito · disguise · furtive · surreptitious · clandestine · shadowing · prowling · silent · unseen
incursion
Hostile territorial penetration
- reconnaissanceInformation-gathering before action
- guerrillaIrregular armed fighter
- raidSudden armed incursion
ambush · flanking · breach · perimeter · insertion · sabotage · commando · patrol · advance · operative
mole
Subterranean insectivore
- plantBotanical organism
- insiderOne with confidential access
- subversionUndermining established authority
sleeper · asset · penetration · co-optation · compromise · embedded · cover · manipulation · turncoat · informant
cellular
Composed of small units
- tissueDisposable soft paper
- lymphocyteImmune system white cell
- leukocyteInfection-fighting blood cell
inflammation · tumor · metastasis · edema · fatty · immune · pathological · biopsy · lesion · fibrosis
- strategystrategy, grand strategy, tactics, tactic, tactical
- soil sciencesoil, topsoil, subsoil, clay, sand
- groundwateraquifer, aquifers, water table, recharge, confined aquifer
- espionagespy, spies, double agent, double agents, spying
- Natural Processesphotosynthesis, decomposition, evaporation, erosion, carbon cycle
- operationsoperation, operations, military operation, joint operation, workflow
infiltrationinvasion
Forcible entry into territory
storming · raid · siege · blitz · bombardment
infiltrationwithdrawal
Act of taking away
exfiltration · retreat · evacuation · departure · extraction
infiltrationopen enrollment
Designated benefits signup window
invitation · expulsion · ejection · loyalty · exclusion
- infiltration basinsDepressions allowing water percolation
- water infiltrationLiquid passing through materials