[eks-fil-treyt, eks-fil-treyt] 
verb, -trat⋅ed, -trat⋅ing.| 1. | to escape furtively from an area under enemy control. |
| 2. | to smuggle (military personnel) out of an area under enemy control. |
| Main Entry: | exfiltrate |
| Part of Speech: | v |
| Definition: | to withdraw troops surreptitiously, esp. from a dangerous position |
| Etymology: | opposite of infiltrate, back formation of exfiltration 'filtering out' |
treɪt