[reporting verb](formal)hold and state as one's opinion (正式)认为;发表意见 [with direct speech]‘The man is a genius,’ he opined. “这人是个天才,”他发表意见说。 [with clause]the headmistress opined that the outing would make a nice change for Flora. 女校长认为这次出游将是弗萝拉换换环境的好机会。
语源
late Middle English: from Latin opinari 'think, believe'