infiltration Synonyms

percolation seepage invasion espionage leakage encroachment intrusion diffusion incursion ingress penetration subsumption suffusion soakage sortie spargefaction subversion spying osmosis sarcocarp osmotic passage permeation pervasion saturation piercing raid raiding reconnaissance swillings transfusion transudation trespass sorption chemisorption coup de main undercover operation entrenchment undercover work piercings penetrations onslaught absorption escalade exosmosis filtration foray illapse imbruement imbuement