thankless

adj

"thankless" is a 9-letter English headword indexed on PlainSpell.

The verdict

“thankless” has 13 generated spelling variants in the English index at frequency #46,812. The variants make it a useful spelling check.

#46,812
frequency rank, English
27,828
“T” headwords
13
tracked misspellings

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - not appreciated or rewarded

Key facts for thankless
PropertyValue
Headwordthankless
LanguageEnglish
Part of speechAdjective
Letters9
Frequency rank#46,812
Misspellings tracked13
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “thankless” sits in English frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). thankless lands here:

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

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 13 spelling variants around thankless, anadjective. Corpus frequency is #46,812 among 27,828 “T” headwords. Wiktionary lists 2 senses, so context still picks the gloss.

Our generated misspelling index lists 13 likely wrong-spelling variants for thankless, with forms such as "htankless", "tahnkless", and "thaknless". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. We don't track a confusable pairing for this entry, which typically means the spelling is too distinctive to be mistaken for another word.

Etymologically, the entry records: From Middle English thankles, equivalent to thank + -less. The correct English form is thankless, spelled T-H-A-N-K-L-E-S-S.

Definition

  1. 1
    not appreciated or rewarded
  2. 2
    ungrateful or unappreciative

Etymology

From Middle English thankles, equivalent to thank + -less.

Antonyms

This word in other languages

Common misspellings

Also misspelled as:

  • htankless
  • tahnkless
  • thaknless
  • thankelss
  • thankkless
  • thankles
  • thanklless
  • thanklses
  • thanlkess
  • thannkless
  • thhankless
  • thnakless
  • tthankless

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of thankless - expressed in single-character edits (insert, delete, or swap one letter). Bigger bars stand out at a glance; a one-edit slip is the hardest to catch.

htankless2tahnkless2thaknless2thankelss2thankkless1thankles1thanklless1thanklses2
Edit distance from "thankless"

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 "thankless"?
"thankless" is spelled T-H-A-N-K-L-E-S-S.
What does "thankless" mean?
As an adjective, "thankless" means: not appreciated or rewarded
What are common misspellings of "thankless"?
Common misspellings include "htankless", "tahnkless", "thaknless", "thankelss", "thankkless". The correct spelling is "thankless".
What is the origin of the word "thankless"?
From Middle English thankles, equivalent to thank + -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.

Using “thankless”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is T-H-A-N-K-L-E-S-S - every other letter order is a misspelling in standard orthography.
  • Browse more English words and confusable pairs in the same reference. English words

Same frequency band

Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

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

Source: FrequencyWords open word-frequency list