dare

Noun

• a challenge to do something dangerous or foolhardy
  • he could never refuse a dare
    

Verb

• challenge
  • I dare you!
    

• to be courageous enough to try or do something
  • I don't dare call him, she dares to dress differently from the others
    

• take upon oneself; act presumptuously, without permission
  • How dare you call my lawyer?
    

Related words

• Synonyms: 
  daring , defy , make bold , presume