untruthful

adj

"untruthful" is a 10-letter English headword indexed on PlainSpell.

The verdict

“untruthful” is uncommon English (frequency #68,728 among 1,433 “U” headwords), classed as an adjective. The kind of spelling people second-guess.

#68,728
frequency rank, English
1,433
“U” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Not giving the truth; providing untrue facts; lying.

Corpus desk

Index EN-untruthful · untruthful · English

untruthful · rank #68,728 · 0 variants · 0 confusables

  • FREQ-RARE #68,728
  • LEN-MEGA 10 letters
  • VOW-3 3 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 1,433
  • PHOTO-FINISH unsavoury

Nearest frequency peer: unsavoury (-1 rank slots)

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Long-tail ranks near “untruthful”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “untruthful” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for untruthful
PropertyValue
Headworduntruthful
LanguageEnglish
Part of speechAdjective
Letters10
Frequency rank#68,728
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “untruthful” in English

This scale runs from the tiny cluster of words that carry ordinary speech (left) to the long tail of words almost nobody reaches for (right).untruthfulfalls in this rarity band:

#1#100#1K#10K#100K
← used constantlyrarely used →

The axis is logarithmic, with each marked tick roughly ten times rarer than the last. Rare peers in the same band: “unsavoury” (#68,727), “unrepresentative” (#68,726), “unpredictably” (#68,725). Among 1,433 “U” headwords, “untruthful” is #68,728. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

untruthful is uncommon English at frequency #68,728 among 1,433 “U” headwords, classed as anadjective. Rarity is why readers land here mid-draft. 2 senses are on record.

No generated misspelling entries exist for untruthful in our index, a sign its spelling follows regular English conventions. We don't track a confusable pairing for this entry, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.

Etymologically, the entry records: From un- + truthful. Compare Middle English untreuthfull, untrowþeful, wntreuthtfull (“unbelieving, infidel”). The correct English form is untruthful, spelled U-N-T-R-U-T-H-F-U-L.

Definition

  1. 1
    Not giving the truth; providing untrue facts; lying.
  2. 2
    Pertaining to falsehood; corrupt; dishonest.

Recorded use

Wiktionary examples

These source excerpts show how untruthful appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. Cousin, good night; / And whatsoe’er be told of me henceforth, / A most untruthful annalist were he, / Who said I did not love my cousin Anna.
  2. Upon principle it is his aim to exhibit integrity of dealing, honest and godly sincerity to all men; if he fail, it must be in degree, it cannot be in kind; for a false and untruthful mind can never rightly know God; the more we know of him, the more upright and ingenuous, and liberal, and kind, and humane, and generous, must be our conduct to man.

Etymology

From un- + truthful. Compare Middle English untreuthfull, untrowþeful, wntreuthtfull (“unbelieving, infidel”).

Antonyms

This word in other languages

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "untruthful"?
"untruthful" is spelled U-N-T-R-U-T-H-F-U-L.
What does "untruthful" mean?
As an adjective, "untruthful" means: Not giving the truth; providing untrue facts; lying.
What is the origin of the word "untruthful"?
From un- + truthful. Compare Middle English untreuthfull, untrowþeful, wntreuthtfull (“unbelieving, infidel”). See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "untruthful", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 10 letters (nearest by frequency rank).

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list