资料来源 : pyDict

真,真实,纯真

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Trueness \True"ness\, n.
   The quality of being true; reality; genuineness;
   faithfulness; sincerity; exactness; truth.

资料来源 : WordNet®

trueness
     n : exactness of adjustment; "I marveled at the trueness of his
         aim"