knowledgeability

/ˌnɑlɪdʒəˈbɪləti/
noun
  1. The quality of being well-informed and having a lot of knowledge about a particular subject or many subjects.
    • Her knowledgeability about wines impressed the sommelier.
    • His knowledgeability in computer programming made him a valuable team member.
    • The candidate's knowledgeability on foreign policy was evident during the debate.
Antonyms
What does "knowledgeability" mean? | whatsthatwordmean | whatsthatwordmean