English edit

Etymology edit

under- +‎ defined

Adjective edit

underdefined (comparative more underdefined, superlative most underdefined)

  1. Inadequately defined.
    • 2009 April 12, Michael Beschloss, “We’re Still the One”, in New York Times[1]:
      The campaign of 2008 was but the latest instance of a presidential contest (like 1952 and 1964, to name only two) when the debate over foreign affairs was underdeveloped and the election mandate for the new president in foreign policy was strong but underdefined.