definition of truest by The Free Dictionary



adj. tru·er, tru·est


a. Consistent with fact or reality; not false or erroneous: the true cost. See Synonyms at real1. See Usage Note at fact.
b. Not counterfeit; real or genuine: true gold. See Synonyms at authentic.

c. Conforming to the characteristics or criteria of a group or type; typical: a true crab; a true gentleman.

d. Properly called: true value.

2. Reliable; accurate: a true prophecy.


a. Faithful, as to a friend, vow, or cause; loyal. See Synonyms at faithful.

b. Archaic Truthful, honest, or trustworthy.

4. Sincerely felt or expressed; unfeigned: true grief.

5. Rightful; legitimate: the true heir.


a. Exactly conforming to a rule, standard, or pattern: trying to sing true B.

b. Accurately shaped, fitted, or placed: Are the wheels true?

c. Determined with reference to the earth’s axis, not the magnetic poles: true north.

7. Quick and exact in sensing and responding: a true ear.

8. Computers Indicating one of two possible values taken by a variable in Boolean logic or a binary device.


1. In accord with reality, fact, or truthfulness.

2. Unswervingly; exactly: The archer aimed true.

3. So as to conform to a type, standard, or pattern.

tr.v. trued, tru·ing or true·ing, trues

To position (something) so as to make it balanced, level, or square: trued up the long planks.


1. Truth or reality. Used with the.

2. Proper alignment or adjustment: out of true.

true′ness n.

Word History: The words true and tree are joined at the root, etymologically speaking. In Old English, the words looked and sounded much more alike than they do now: “tree” was trēow and “true” was trēowe. The first of these comes from the Germanic noun *trewam; the second, from the adjective *treuwaz. Both these Germanic words ultimately go back to an Indo-European root *deru- or *dreu-, appearing in derivatives referring to wood and, by extension, firmness. Truth may be thought of as something firm; so too can certain bonds between people, like trust, another derivative of the same root. A slightly different form of the root, *dru-, appears in the word druid, a type of ancient Celtic priest; his name is etymologically *dru-wid-, or “strong seer.”

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.



adj, truer or 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.


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. (Music, other) exactly in tune: a true note.

7. (Navigation) (of a compass bearing) according to the earth’s geographical rather than magnetic poles: true north.

8. (Biology) biology conforming to the typical structure of a designated type: sphagnum moss is a true moss, Spanish moss is not.

9. (General Physics) 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 apparent3

10. not true informal unbelievable; remarkable: she’s got so much money it’s not true.

11. true to life exactly comparable with reality


correct alignment (esp in the phrases in true, out of true)


12. truthfully; rightly

13. precisely or unswervingly: he shot true.

14. (Biology) biology without variation from the ancestral type: to breed true.

vb, trues, truing or trued

(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]

ˈtrueness n

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014



adj. tru•er, tru•est, adj.

1. being in accordance with the actual state or conditions; conforming to reality or fact: a true story.

2. real; genuine; authentic: true gold.

3. sincere; not deceitful: a true interest in others.

4. loyal; faithful; steadfast: a true friend.

5. being or reflecting the essential or genuine character: the true meaning of his statement.

6. conforming to or consistent with a standard, pattern, etc.: a true copy.

7. exact; precise; accurate; correct: a true balance.

8. such as it should be; proper: to arrange things in their true order.

9. properly so called; rightly answering to a description: true statesmanship.

10. legitimate or rightful: the true heir.

11. reliable, unfailing, or sure: a true sign.

12. exactly or accurately shaped, formed, fitted, or placed, as a surface or instrument.

13. honest; honorable; upright.

14. conforming to the type, structural standards, or norm of a particular group: The lion is a true cat.

16. (of a bearing, course, etc.) determined in relation to true north.

17. Archaic. truthful.


18. exact or accurate formation, position, or adjustment: to be out of true.

19. the true, something that is true; truth.


20. in a true manner; truly; truthfully.

21. exactly or accurately.

22. in conformity with the ancestral type: to breed true.


23. to adjust, shape, place, etc., exactly or accurately; make true.

24. (esp. in carpentry) to make even, symmetrical, level, etc. (often fol. by up).


come true, (of a wish, dream, etc.) to become a reality.

[before 900; Middle English trewe (adj. and adv.), Old English trēowe (adj.) loyal, trustworthy (compare trow, truce); akin to Old High German gitriuwi, Old Norse tryggr, Gothic triggws trustworthy]

true′ness, n.

Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

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