WordNet (r) 3.0 (2006):

Geert Geerts
    n 1: Dutch humanist and theologian who was the leading
         Renaissance scholar of northern Europe; although his
         criticisms of the Roman Catholic Church led to the
         Reformation, he opposed violence and condemned Martin
         Luther (1466-1536) [syn: Erasmus, Desiderius Erasmus,
         Gerhard Gerhards, Geert Geerts]