ロングマン現代英英辞典よりlearnedlearn‧ed /ˈlɜːnɪd $ ˈlɜːr-/ adjective formal1INTELLIGENTa learned person has a lot of knowledge because they have read and studied a lot
a learned professor2 →learned books/works etc —learnedly adverbコーパスの例learned• It's true that artcritics aren't as learned as art-historians in these matters.• The old professor was obviously a very learned man.