truth (n.)

古英语 triewð (西撒克逊语), treowð (默西亚语)"信仰,忠诚,忠实,忠诚;真实性,真实的品质;保证,契约",来自日耳曼语抽象名词 *treuwitho ,来自原日耳曼语 treuwaz "具有或以诚信为特征",来自PIE *drew-o- ,是词根 *deru- 的后缀形式"be firm,solid,stadfast"。与日耳曼语抽象名词后缀 *-itho (见 -th (2))。

"真实的东西"的意义最早记载于14世纪中叶 意为"准确、正确"是1560年代的。英语和其他大多数IE语言没有"说真话"的主动词,与 lie (v.)形成鲜明对比。 Truth squad 在美国政治意义上最早见于1952年美国总统选举活动。

At midweek the Republican campaign was bolstered by an innovation—the "truth squad" ..., a team of senators who trailed whistle-stopping Harry Truman to field what they denounced as his wild pitches. [Life magazine, Oct. 13, 1952]

Let [Truth] and Falsehood grapple; who ever knew Truth put to the worse, in a free and open encounter. [Milton, "Areopagitica," 1644]

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Definitions of truth from WordNet
truth (n.)
a fact that has been verified;
at last he knew the truth
the truth is that he didn't want to do it
truth (n.)
conformity to reality or actuality;
the situation brought home to us the blunt truth of the military threat
he was famous for the truth of his portraits
they debated the truth of the proposition
Synonyms: the true / verity / trueness
truth (n.)
a true statement;
he thought of answering with the truth but he knew they wouldn't believe it
he told the truth
Synonyms: true statement
truth (n.)
the quality of being near to the true value;
the lawyer questioned the truth of my account
Synonyms: accuracy
Truth (n.)
United States abolitionist and feminist who was freed from slavery and became a leading advocate of the abolition of slavery and for the rights of women (1797-1883);
Synonyms: Sojourner Truth