thinness

noun

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

The verdict

“thinness” is uncommon English (frequency #60,514 among 3,151 “T” headwords), classed as a noun. The kind of spelling people second-guess.

#60,514
frequency rank, English
3,151
“T” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The state or quality of being thin.

Corpus desk

Index EN-thinness · thinness · English

thinness · rank #60,514 · 0 variants · 0 confusables

  • FREQ-RARE #60,514
  • LEN-LONG 8 letters
  • VOW-2 2 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 3,151
  • PHOTO-FINISH thankfulness

Nearest frequency peer: thankfulness (-2 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 “thinness”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

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

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for thinness
PropertyValue
Headwordthinness
LanguageEnglish
Part of speechNoun
Letters8
Frequency rank#60,514
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “thinness” 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).thinnessfalls in this rarity band:

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

Ticks step logarithmically, so each one marks a roughly tenfold drop in how often the word turns up. Rare peers in the same band: “thankfulness” (#60,512), “Teddington” (#60,510), “tipple” (#60,518). Among 3,151 “T” headwords, “thinness” is #60,514. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

thinness is uncommon English at frequency #60,514 among 3,151 “T” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "The state or quality of being thin.".

thinness has no tracked misspelling variants, a sign its spelling follows regular English conventions. It is not paired with a close-neighbour confusable in our dataset, since its spelling is unusual enough that it doesn't cluster with a lookalike.

Etymologically, the entry records: From Middle English thynnesse, from Old English þynnes (“thinness, slightness of density, lack of density, tenuity, fluidity, poverty, feebleness of sight, weakness”), equivalent to thin + -ness. The correct English form is thinness, spelled T-H-I-N-N-E-S-S.

Definition

  1. 1
    The state or quality of being thin.

Recorded use

Wiktionary examples

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

  1. The beautiful prismatic colours seen on the Labrodore stone are owing to a similar cause, viz. the thinness of the laminæ of which it consists […].
  2. Beyond celebrating the aesthetic value of thinness, pro-anas claim that thinness is a reflection of excellence in other areas of one's life.

Etymology

From Middle English thynnesse, from Old English þynnes (“thinness, slightness of density, lack of density, tenuity, fluidity, poverty, feebleness of sight, weakness”), equivalent to thin + -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); 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 "thinness"?
"thinness" is spelled T-H-I-N-N-E-S-S.
What does "thinness" mean?
As a noun, "thinness" means: The state or quality of being thin.
What is the origin of the word "thinness"?
From Middle English thynnesse, from Old English þynnes (“thinness, slightness of density, lack of density, tenuity, fluidity, poverty, feebleness of sight, weakness”), equivalent to thin + -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.

Similar English words by spelling shape

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

Same letter count

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

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

Source: FrequencyWords open word-frequency list