This word is acceptable for play in the US dictionary that is being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. The process of exiting an area (usually behind enemy lines or in enemy territory).

n. A method for managing storm water runoff.

"In the sensitive areas where attempts at 'exfiltration' are insistent the vigilance is sharp and every day someone, somewhere along the nine hundred miles of the Frontier, dies, a worn coat puckered by a ballet and a hand going out to break the fall of the living body that is dead before it meets the ground; and there is special leave for the man who shot him down."

infiltration   

exhilaration   

minimum-risk    transudation    high-occupancy    on-link    privacy-enhancing