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virtuoso (EN)
noun, adjective

noun “virtuoso”

singular virtuoso, plural virtuosos, virtuosi or uncountable
  1. a person who has exceptional skill or knowledge in a particular area
    The chess grandmaster was considered a virtuoso for his deep understanding of the game's strategies.

adjective “virtuoso”

base form virtuoso, non-gradable
  1. showing the impressive skill and ability of a highly skilled person
    His virtuoso handling of the complex legal case impressed both his clients and his peers.