[troo] 
adjective, tru⋅er, tru⋅est, noun, adverb, verb, trued, tru⋅ing or true⋅ing.| 1. | being in accordance with the actual state or conditions; conforming to reality or fact; not false: a true story. |
| 2. | real; genuine; authentic: true gold; true feelings. |
| 3. | sincere; not deceitful: a true interest in someone's welfare. |
| 4. | firm in allegiance; loyal; faithful; steadfast: a true friend. |
| 5. | being or reflecting the essential or genuine character of something: the true meaning of his statement. |
| 6. | conforming to or consistent with a standard, pattern, or the like: a true copy. |
| 7. | exact; precise; accurate; correct: a true balance. |
| 8. | of the right kind; 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, instrument, or part of a mechanism. |
| 13. | honest; honorable; upright. |
| 14. | Biology. conforming to the type, norm, or standard of structure of a particular group; typical: The lion is a true cat. |
| 15. | Animal Husbandry. purebred. |
| 16. | Navigation. (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 make true; shape, adjust, place, etc., exactly or accurately: to true the wheels of a bicycle after striking a pothole. |
| 24. | (esp. in carpentry) to make even, symmetrical, level, etc. (often fol. by up): to true up the sides of a door. |
| 25. | come true, to have the expected or hoped-for result; become a reality: She couldn't believe that her dream would ever come true. |
| true (trōō) adj. tru·er, tru·est
To position (something) so as to make it balanced, level, or square: trued up the long planks. n.
[Middle English trewe, from Old English trēowe, firm, trustworthy; see deru- in Indo-European roots.] 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." |
true
In addition to the idioms beginning with true, also see come true; course of true love; dream come true; find true north; hold good (true); ring false (true); run (true) to form; too good to be true; tried and true.