| exfiltrate | (verb) escape furtively, as from an area under enemy control | - |
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| (verb) transfer secretly out of an area under enemy control | - |
| filter | (verb) remove by passing through a filter | Synonyms: filter out, filtrate, separate out, strain |
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| (verb) pass through | Synonyms: percolate, permeate, sink in |
| (verb) run or flow slowly, as in drops or in an unsteady stream | Synonyms: dribble, trickle |
| filtrate | (verb) remove by passing through a filter | Synonyms: filter, filter out, separate out, strain |
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| infiltrate | (verb) pass through an enemy line; in a military conflict | Synonyms: pass through |
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| (verb) cause (a liquid) to enter by penetrating the interstices | - |
| (verb) pass into or through by filtering or permeating | - |
| (verb) enter a group or organization in order to spy on the members | Synonyms: penetrate |