Loos Family History
Loos Surname Meaning
German: habitational name from any of several places called Loose or Loosey.
North German: from a short form of Nikolaus, the German form of Nicholas.
Flemish and Dutch: nickname from the adjective loos ‘cunning, artful, guileful’.
English: variant of Loose.
Source: Dictionary of American Family Names 2nd edition, 2022
