tireless

adj

"tireless" is a 8-letter English headword indexed on PlainSpell.

The verdict

“tireless” has 10 generated spelling variants in the English index at frequency #27,678. The variants make it a useful spelling check.

#27,678
frequency rank, English
3,151
“T” headwords
10
tracked misspellings
3
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Indefatigable, untiring and not yielding to fatigue

Corpus desk

Index EN-tireless · tireless · English

tireless · rank #27,678 · 10 variants · 3 confusables

  • FREQ-MID #27,678
  • LEN-LONG 8 letters
  • VOW-3 3 vowels
  • CONFUS-LOW 3 pairs
  • VAR-MID 10 variants
  • BOOK-MID 3,151
  • PHOTO-FINISH tenacious

Nearest frequency peer: tenacious (-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.

Rank peers near misspelling magnet “tireless”

Same rarity band: useful when a typo lands on a peer headword

corpus weight

What this shows “tireless” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

tireless vs tirelessly
80% similar
tireless vs timeless
88% similar
tireless vs tiredness
78% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for tireless
PropertyValue
Headwordtireless
LanguageEnglish
Part of speechAdjective
Letters8
Frequency rank#27,678
Misspellings tracked10
Confusable pairs3
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “tireless”

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).tirelesslands here:

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

The axis is logarithmic, with each marked tick roughly ten times rarer than the last. Same rarity band neighbours include “tenacious” (#27,677), “toothed” (#27,679), “teh” (#27,676). Among 3,151 “T” headwords, “tireless” is #27,678. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 10 spelling variants around tireless, anadjective. Corpus frequency is #27,678 among 3,151 “T” headwords. Dominant gloss: "Indefatigable, untiring and not yielding to fatigue".

Our generated misspelling index lists 10 likely wrong-spelling variants for tireless, with forms such as "itreless", "tierless", and "tireelss". Each variant is a distinct typo pattern an edit-distance generator flags, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution. It also participates in 3 confusable-pair relationships, "tirelessly", "timeless", "tiredness", where similar look or sound leads writers to substitute one word for another in context.

Etymologically, the entry records: From tire (“to become sleepy or weary”) + -less The correct English form is tireless, spelled T-I-R-E-L-E-S-S.

Definition

  1. 1
    Indefatigable, untiring and not yielding to fatigue

Recorded use

Wiktionary example

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

  1. James Milner's angled free-kick was headed on to the post by the tireless Bent and Lampard the opportunist was perfectly placed to stoop and head in from virtually on the goal-line.

Etymology

From tire (“to become sleepy or weary”) + -less

Synonyms

Antonyms

This word in other languages

Common misspellings

Also misspelled as:

  • itreless
  • tierless
  • tireelss
  • tireles
  • tirelless
  • tirelses
  • tirleess
  • tirreless
  • trieless
  • ttireless

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of tireless - counted as single-character edits (an insertion, a deletion, or a substituted letter). The larger the bar, the easier the typo is to spot; one-edit slips are the ones that sneak past readers.

itreless2tierless2tireelss2tireles1tirelless1tirelses2tirleess2tirreless1
Edit distance from "tireless"

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 "tireless"?
"tireless" is spelled T-I-R-E-L-E-S-S.
What does "tireless" mean?
As an adjective, "tireless" means: Indefatigable, untiring and not yielding to fatigue
What words are commonly confused with "tireless"?
"tireless" is commonly confused with "tirelessly", "timeless", "tiredness". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
What is the origin of the word "tireless"?
From tire (“to become sleepy or weary”) + -less 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 "tireless", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 8 letters (nearest by frequency rank).

Similar misspelling depth

Headwords with a similar count of attested misspellings (10 here; floor ≥5).

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

Source: FrequencyWords open word-frequency list