Definition of "level-headed"

level-headed

adjective
comparative more level-headed, superlative most level-headed
1. (idiomatic) Sensible; rational; possessing sound judgment.
  Quotations
  I urge you to weigh calmly, deliberately, as cool, level-headed Canadians, the evidence produced by the prosecution.
  1909, Ralph Connor, The Foreigner, chapter 7