untrue
Americanadjective
-
not true, as to a person or a cause, to fact, or to a standard.
- Synonyms:
- erroneous, unfounded, groundless
-
unfaithful; false.
-
incorrect or inaccurate.
adjective
-
incorrect or false
-
disloyal
-
diverging from a rule, standard, or measure; inaccurate
Other Word Forms
Etymology
Origin of untrue
before 1050; Middle English untrewe, Old English un ( ge ) trēowe; see un- 1, true
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
Moynihan has more than once used “gainsay,” or to declare something as untrue or invalid.
From The Wall Street Journal ● Aug. 17, 2026
A spokesman for the now Fifa president was reported to have told the paper Infantino "strongly denies these categorically untrue allegations".
From BBC ● Aug. 7, 2026
If he was implying that the money was specifically pigeonholed for an accelerated retirement of government securities, that’s untrue.
From Los Angeles Times ● Aug. 6, 2026
Eddins’ majority applied the false-evidence standard used when prosecutors knowingly present untrue testimony, holding that the state constitution makes the prosecutor’s knowledge irrelevant.
From Slate ● Jul. 17, 2026
But now I knew this was untrue, and that I was exactly like other girls.
From "The Evolution of Calpurnia Tate" by Jacqueline Kelly
![]()
And Graham once more snatched her aloft, and she again punished him; and while she pulled his lion's locks, termed him—"The naughtiest, rudest, worst, untruest person that ever was."
From Villette by Charlotte Brontë
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.