undeniable

adj.

不可否认的，无法抵赖的；无可争辩的；确实优秀的；无可疵议的

1. His charm is undeniable,but I still mistrust him.
   他有魅力无庸置疑,但我仍对他没有信心。
2. The urgent need for nuclear nonprolifeation is undeniable.
   防止核扩散的紧迫性是不可否认的。
3. The fact of dissatisfaction is undeniable.
   事实虽令人不满，但却无可争辩。
4. The one with black hat is an undeniable young man.
   那个戴着黑帽子的是一个优秀的青年。

Undeniable Signatures
Undeniable signatures
Undeniable Signatures
RSA-Based Undeniable Signatures
Convertible undeniable signatures
Zero-Knowledge Undeniable Signatures (extended abstract)
Zero-Knowledge Undeniable Signatures (extended abstract)
Some weaknesses of "weaknesses of undeniable signatures"
Distributed Provers with Applications to Undeniable Signatures
Distributed Provers with Applications to Undeniable Signatures