OpenEtymology

untruthful

UKʌnˈtruːθf(ə)lUSʌnˈtruːθf(ə)l

Meaning

1adj

not telling the truth; dishonest or insincere.

2adj

not representing the facts accurately; false or incorrect.

Structure

word structure
1
un
not
+
2
truth
fact
+
3
ful
full of

Usage

the witness was found to be untruthful in his testimony.

she gave an untruthful account of the events to avoid getting into trouble.

advertising that is deliberately untruthful is illegal in many countries.

Etymology

The word "untruthful" is a Modern English formation built upon the Germanic root for truth. The core noun "truth" originates from Old English trēowþ, which itself derives from the Proto-Germanic adjective triwwiz, meaning "faithful" or "trustworthy," and is ultimately traceable to the Proto-Indo-European root deru-/dreu-, meaning "firm, solid, steadfast," which also gives us "tree." The suffix "-ful," from Old English -ful, converts the noun into the adjective "truthful," meaning "characterized by truth." Finally, the Old English negative prefix "un-" is attached to negate the quality, creating a term that literally means "not full of truth." This logical, layered construction illustrates how English builds complex abstract meanings by combining simple, ancient morphemes.

Analysis

Structure
un (not) + truth (fact) + ful (full of)=unnot+truthfact+fulfull of

- un: a prefix of germanic origin (old english un-), meaning "not," used to form negatives. - truth: a noun of germanic origin (old english trēowþ, trȳwþ), meaning "faithfulness, fact, reality." - ful: a suffix of germanic origin (old english -ful), meaning "full of," used to form adjectives from nouns.

Untruthful Meaning, Examples & Word Origin | OpenEtymology