trueness

Her trueness to her childhood friends never faded, even after years apart.

用法提示：trueness 在此作名词，表示‘忠诚、忠实’，与 to 连用说明对象。

The dog's trueness to its owner made it a trusted companion.

用法提示：trueness 为名词，指动物对人的忠实，突出 faithfulness 的含义。

We respected her trueness because she always kept her promises.

用法提示：trueness 是名词，这里强调‘守信、忠实’的品质。