If you describe someone or something as ~, you mean that they are silly and childish.
Concert organisers branded the group’s actions as ~...
...~, schoolboy humour.
ADJ disapproval
If you describe someone or something as ~, you mean that they are silly and childish.
Concert organisers branded the group’s actions as ~...
...~, schoolboy humour.
ADJ disapproval
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012