Is “Infangthief” a Scrabble word?
Yes
INFANGTHIEF
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Infangthief
/ˈɪnfæŋθiːf/
noun
1.A privilege of some feudal lords permitting them to execute summary judgment upon thieves captured within their estates, sometimes restricted to the lord's tenants or men and sometimes limited to those caught in flagrante delicto.