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[eks-fil-treyt, eks-fil-treyt] /ɛksˈfɪl treɪt, ˈɛks fɪlˌtreɪt/
verb (used without object), exfiltrated, exfiltrating.
to escape furtively from an area under enemy control.
verb (used with object), exfiltrated, exfiltrating.
to smuggle (military personnel) out of an area under enemy control.
Origin of exfiltrate
First recorded in 1965-70; ex-1 + (in)filtrate
Related forms
exfiltration, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for exfiltrate
Historical Examples
  • I can infiltrate and exfiltrate any room on this campus, D. You've seen me do it.

    Little Brother

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

    Little Brother

    Cory Doctorow
Contemporary definitions for exfiltrate

to withdraw troops surreptitiously, esp. from a dangerous position

Word Origin

opposite of infiltrate, back formation of exfiltration 'filtering out''s 21st Century Lexicon
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