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[troo] /tru/
adjective, truer, truest.
being in accordance with the actual state or conditions; conforming to reality or fact; not false:
a true story.
real; genuine; authentic:
true gold; true feelings.
sincere; not deceitful:
a true interest in someone's welfare.
firm in allegiance; loyal; faithful; steadfast:
a true friend.
being or reflecting the essential or genuine character of something:
the true meaning of his statement.
conforming to or consistent with a standard, pattern, or the like:
a true copy.
exact; precise; accurate; correct:
a true balance.
of the right kind; such as it should be; proper:
to arrange things in their true order.
properly so called; rightly answering to a description:
true statesmanship.
legitimate or rightful:
the true heir.
reliable, unfailing, or sure:
a true sign.
exactly or accurately shaped, formed, fitted, or placed, as a surface, instrument, or part of a mechanism.
honest; honorable; upright.
Biology. conforming to the type, norm, or standard of structure of a particular group; typical:
The lion is a true cat.
Animal Husbandry. purebred.
Navigation. (of a bearing, course, etc.) determined in relation to true north.
Archaic. truthful.
exact or accurate formation, position, or adjustment:
to be out of true.
the true, something that is true; truth.
in a true manner; truly; truthfully.
exactly or accurately.
in conformity with the ancestral type:
to breed true.
verb (used with object), trued, truing or trueing.
to make true; shape, adjust, place, etc., exactly or accurately:
to true the wheels of a bicycle after striking a pothole.
(especially in carpentry) to make even, symmetrical, level, etc. (often followed by up):
to true up the sides of a door.
come true, to have the expected or hoped-for result; become a reality:
She couldn't believe that her dream would ever come true.
Origin of true
before 900; Middle English trewe (adj. and adv.), Old English trēowe (adj.) loyal, trusty, honest (see trow, truce); akin to Dutch trouw, German treu, Old Norse tryggr, Gothic triggws
Related forms
trueness, noun
half-true, adjective
1. factual, veracious. 3. honest. 4. trustworthy; staunch, constant, steady, unwavering. 7. faithful.
Synonym Study
1. See real1. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for trueness
Historical Examples
  • I learned that obedience and trueness to God will bring us into a wealthy place.

    Riches of Grace E. E. Byrum
  • "I don't believe there's any but the one kind of trueness," said Felicity.

    The Story Girl Lucy Maud Montgomery
  • The trueness or the falsity is even now immediately, absolutely, and positively there.

    The Meaning of Truth William James
  • The appearance of a dairy depends very much on the trueness, as well as uniformity in hight, of the cheeses.

    Hints on cheese-making Thomas Day Curtis
  • He possessed a trueness of vision and an understanding of things that were, however, unusual in a lad of his age.

  • They give to the memory image a feeling of pastness and trueness which the image of imagination lacks.

    How to Teach George Drayton Strayer and Naomi Norsworthy
  • His training and the trueness of his way of going having been proved, he must next be tried for courage.

  • Outside these limits, the cheeses are often marketable but they lose in quality63 and trueness to type.

    The Book of Cheese

    Charles Thom and Walter Warner Fisk
  • History, he says, is a hybrid form of experience, incapable of any considerable degree of being or trueness.

    Outspoken Essays William Ralph Inge
  • What a wise man Dickens was to reveal so much sweetness and trueness in the life of such a woman as Phœbe!

    Dickens As an Educator

    James L. (James Laughlin) Hughes
British Dictionary definitions for trueness


adjective truer, truest
not false, fictional, or illusory; factual or factually accurate; conforming with reality
(prenominal) being of real or natural origin; genuine; not synthetic: true leather
  1. unswervingly faithful and loyal to friends, a cause, etc: a true follower
  2. (as collective noun; preceded by the): the loyal and the true
faithful to a particular concept of truth, esp of religious truth: a true believer
conforming to a required standard, law, or pattern: a true aim, a true fit
exactly in tune: a true note
(of a compass bearing) according to the earth's geographical rather than magnetic poles: true north
(biology) conforming to the typical structure of a designated type: sphagnum moss is a true moss, Spanish moss is not
(physics) not apparent or relative; taking into account all complicating factors: the true expansion of a liquid takes into account the expansion of the container Compare apparent (sense 3)
(informal) not true, unbelievable; remarkable: she's got so much money it's not true
true to life, exactly comparable with reality
correct alignment (esp in the phrases in true, out of true)
truthfully; rightly
precisely or unswervingly: he shot true
(biology) without variation from the ancestral type: to breed true
verb trues, truing, trued
(transitive) to adjust so as to make true
Derived Forms
trueness, noun
Word Origin
Old English triewe; related to Old Frisian triūwe, Old Saxon, Old High German triuwi loyal, Old Norse tryggr; see trow, trust
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for trueness



Old English triewe (West Saxon), treowe (Mercian) "faithful, trustworthy," from Proto-Germanic *trewwjaz "having or characterized by good faith" (cf. Old Frisian triuwi, Dutch getrouw, Old High German gatriuwu, German treu, Old Norse tryggr, Gothic triggws "faithful, trusty"), perhaps ultimately from PIE *dru- "tree," on the notion of "steadfast as an oak." Cf., from same root, Lithuanian drutas "firm," Welsh drud, Old Irish dron "strong," Welsh derw "true," Old Irish derb "sure."

Sense of "consistent with fact" first recorded c.1200; that of "real, genuine, not counterfeit" is from late 14c.; that of "agreeing with a certain standard" (as true north) is from c.1550. Of artifacts, "accurately fitted or shaped" it is recorded from late 15c.; the verb in this sense is from 1841. True-love (adj.) is recorded from late 15c.; true-born first attested 1590s. True-false as a type of test question is recorded from 1923.

Online Etymology Dictionary, © 2010 Douglas Harper
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Idioms and Phrases with trueness
The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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