The writer struggled with feelings of rejection when his manuscript was repeatedly turned down.

rejection 是名词，来自动词 reject（拒绝）。reject 由前缀 re-（表示"回、反"）和词根 -ject（表示"投掷"）组成，字面意思是"扔回去"，引申为"拒绝"。 rejection 指"被拒绝的状态或感受"，特别强调被拒绝后产生的负面情绪。