[ eks-fil-treyt, eks-fil-treyt ]
/ ɛksˈfɪl treɪt, ˈɛks fɪlˌtreɪt /

verb (used without object), ex·fil·trat·ed, ex·fil·trat·ing.

to escape furtively from an area under enemy control.

verb (used with object), ex·fil·trat·ed, ex·fil·trat·ing.

to smuggle (military personnel) out of an area under enemy control.


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Origin of exfiltrate

First recorded in 1965–70; ex-1 + (in)filtrate


ex·fil·tra·tion, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for exfiltrate

  • Now, to exfiltrate the campus in perfect anonymity and make our escape.

    Little Brother|Cory Doctorow
  • I can infiltrate and exfiltrate any room on this campus, D. You've seen me do it.

    Little Brother|Cory Doctorow