1. 没有污点的；无瑕疵的；清白的
If you describe something such as someone's record, reputation, or character as unblemished, you mean it has not been harmed or spoiled.

2. 无斑痕的；无瑕疵的；完好无损的
If you describe something as unblemished, you mean that it has no marks or holes on its surface.

1. free from physical or moral spots or stains

e.g. an unblemished record
an unblemished complexion

Synonym: unmarredunmutilated