outfangthief /ˈaʊtfaŋθiːf/ noun3 •(rare, historical) A privilege of some feudal lords permitting them to execute summary judgment upon thieves (particularly their own tenants) captured outside their estates and to keep any chattels forfeited upon conviction.A grant of outfangthief imports the trial of those of his fee taken for felony in another precinct. — 1822 •(rare, historical) A privilege of some feudal lords permitting them to execute summary judgment upon all thieves captured within their estates, regardless of their origin. •(rare, historical) A thief so captured and tried.