alarmist

危言耸听者、杞人忧天者贬义

Critics called him an alarmist, but his warnings proved correct.

批评者说他危言耸听，但他的警告后来证实是对的。

危言耸听的、夸大不实的贬义

The report was dismissed as alarmist and poorly researched.

这份报告被认为危言耸听且缺乏充分研究。