反义词是hesitate，例如：

1、I didn't hesitate for a moment about taking the job.我毫不犹豫地接受了那份工作。

2、She hesitated for the merest fraction of a second.她略微犹豫了一下。

3、Simon saw she was hesitating and pressed home his advantage.西蒙见她犹豫不决，便趁机占尽优势。