Main Entry: tau·tol·o·gous

Pronunciation: \tȯ-ˈtä-lə-gəs\

Function: adjective

Etymology: Greek tautologos, from taut- + legein to say — more at legend

Date: 1714

1 : involving or containing rhetorical tautology : redundant
2 : true by virtue of its logical form alone

— tau·tol·o·gous·ly adverb