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.

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

trueness, noun
half-true, adjective

1. factual, veracious. See real1. 3. honest. 4. trustworthy; staunch, constant, steady, unwavering. 7. faithful. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
true (truː)
adj , truer, truest
1.  not false, fictional, or illusory; factual or factually accurate; conforming with reality
2.  (prenominal) being of real or natural origin; genuine; not synthetic: true leather
3.  a.  unswervingly faithful and loyal to friends, a cause, etc: a true follower
 b.  (as collective noun; preceded by the): the loyal and the true
4.  faithful to a particular concept of truth, esp of religious truth: a true believer
5.  conforming to a required standard, law, or pattern: a true aim; a true fit
6.  exactly in tune: a true note
7.  (of a compass bearing) according to the earth's geographical rather than magnetic poles: true north
8.  biology conforming to the typical structure of a designated type: sphagnum moss is a true moss, Spanish moss is not
9.  physics Compare apparent not apparent or relative; taking into account all complicating factors: the true expansion of a liquid takes into account the expansion of the container
10.  informal not true unbelievable; remarkable: she's got so much money it's not true
11.  true to life exactly comparable with reality
12.  correct alignment (esp in the phrases in true, out of true)
13.  truthfully; rightly
14.  precisely or unswervingly: he shot true
15.  biology without variation from the ancestral type: to breed true
vb , truer, truest, trues, truing, trued
16.  (tr) to adjust so as to make true
[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 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

O.E. triewe (W.Saxon), treowe (Mercian) "faithful, trustworthy," from P.Gmc. *trewwjaz "having or characterized by good faith" (cf. O.Fris. triuwi, Du. getrouw, O.H.G. gatriuwu, Ger. treu, O.N. tryggr, Goth. triggws "faithful, trusty"), perhaps ultimately from PIE *dru- "tree," on the notion of "steadfast
as an oak." Cf., from same root, Lith. drutas "firm," Welsh drud, O.Ir. dron "strong," Welsh derw "true," O.Ir. 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. Truism "self-evident truth" is from 1708, first attested in writings of Swift. 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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Example sentences for truing
Truing is restoring the abrasive to its original surface shape.
Related Words
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