Law Dictionary

filius nullius

noun fi·li·us nul·li·us \ˈfi-lē-əs-ˈnə-lē-əs, -nə-ˈlī-əs; ˈfē-lē-u̇s-ˈnu̇-lē-u̇s\

Legal Definition of filius nullius

  1. :  an illegitimate child :  bastard —called also filius populi

Origin and Etymology of filius nullius

Medieval Latin, literally, no one's son

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a trip made at another's expense

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