soph ‧ o ‧ mor ‧ ic /ˌsɒfəˈmɒrɪk◂ $ ˌsɑːfəˈmɔːrɪk◂, -ˈmɑː-/ BrE AmE adjective American English formal
silly, and behaving in a way that is typical of someone much younger:
sophomoric humor
soph ‧ o ‧ mor ‧ ic /ˌsɒfəˈmɒrɪk◂ $ ˌsɑːfəˈmɔːrɪk◂, -ˈmɑː-/ BrE AmE adjective American English formal
silly, and behaving in a way that is typical of someone much younger:
sophomoric humor
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012