thoughtlessness

/ˈθɔːtləsnɪs/

//ˈθɔːtləsnɪs// noun

"thoughtlessness" is a 15-letter English headword indexed on PlainSpell.

The verdict

“thoughtlessness” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.

Unranked
below top-frequency English
15
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - disregard for other's feelings

Corpus desk

Index EN-thoughtlessness · thoughtlessness · English

thoughtlessness · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 15 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "T" thin
  • PHOTO-UNK Peer pending

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.

Key facts for thoughtlessness
PropertyValue
Headwordthoughtlessness
LanguageEnglish
Part of speechNoun
IPA/ˈθɔːtləsnɪs/
Letters15
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “thoughtlessness” in English

thoughtlessnessfalls outside the top-100,000 ranked English words, the long-tail zone of technical, archaic, or low-frequency vocabulary, exactly where readers second-guess spellings most.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

thoughtlessness is uncommon English outside the top frequency list, classed as anoun, transcribed /ˈθɔːtləsnɪs/. Rarity is why readers land here mid-draft. 2 senses are on record.

Our edit-distance generator produced no likely misspellings for thoughtlessness, a straightforward case of a spelling with little room for common typos. We don't track a confusable pairing for this entry, a sign it's visually distinctive enough not to be mixed up with another word.

Etymologically, the entry records: From thoughtless + -ness. The correct English form is thoughtlessness, spelled T-H-O-U-G-H-T-L-E-S-S-N-E-S-S.

Definition

  1. 1
    disregard for other's feelings
  2. 2
    heedless disregard for the consequences of one's actions

Etymology

From thoughtless + -ness.

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). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "thoughtlessness"?
"thoughtlessness" is spelled T-H-O-U-G-H-T-L-E-S-S-N-E-S-S. The IPA pronunciation is /ˈθɔːtləsnɪs/.
What does "thoughtlessness" mean?
As a noun, "thoughtlessness" means: disregard for other's feelings
How do you pronounce "thoughtlessness"?
The IPA (International Phonetic Alphabet) transcription for "thoughtlessness" is /ˈθɔːtləsnɪs/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "thoughtlessness"?
From thoughtless + -ness. 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.

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

Source: FrequencyWords open word-frequency list