infiltration (n.)

• absorbency
• absorbent
• absorption
• access
• admission
• adsorbent
• adsorption
• aggression
• assault
• assimilation
• attack
• blitz
• blitzkrieg
• blotter
• breakthrough
• brewing
• charge
• chemisorption
• chemosorption
• counterattack
• counteroffensive
• decoction
• digestion
• diversion
• drenching
• drive
• ducking
• encirclement
• encroachment
• engrossment
• entrance
• entree
• entrenchment
• entry
• feint
• impingement
• import
• importation
• importing
• imposition
• impregnation
• income
• incoming
• incursion
• influx
• infringement
• infusion
• ingress
• injection
• input
• inroad
• insertion
• insinuation
• instillation
• instillment
• intake
• interference
• interjection
• interpenetration
• interposition
• interruption
• intervention
• introduction
• intrusion
• invasion
• investment
• irruption
• leaching
• leakage
• maceration
• megadeath
• mugging
• offense
• offensive
• onset
• onslaught
• osmosis
• overkill
• penetration
• percolation
• permeation
• pervasion
• push
• reception
• rush
• sally
• saturation
• seepage
• soak
• soakage
• soaking
• sorption
• sortie
• souse
• sousing
• sponge
• strategy
• strike
• suffusion
• tactics
• trespass