This is the 3537th most frequent Chinese word.
毅然
Resolutely; decisively.
Here, '毅然' is used to describe the subject's firm and decisive attitude in making a choice despite challenges.
他面对困难毅然选择迎难而上。
He resolutely chose to face the challenges in the face of difficulties.
In this sentence, '毅然' emphasizes the subject's determined action to leave the job, showing decisiveness.
她毅然辞去了令人羡慕的高薪工作。
She resolutely resigned from her enviable high-paying job.
'毅然' is used here to convey the subject's strong determination to act immediately to help their friend.