unchallenged

Từ điển WordNet v3.1 - WordNet Dictionary

adjective

generally agreed upon;
not subject to dispute
- the undisputed fact
• Syn:
undisputed, unquestioned
• Similar to:
uncontroversial, noncontroversial

• Từ đồng nghĩa / Synonyms:
  undisputed, unquestioned