smoothness

Name: smoothness, English Word Data
Creator: Wiktionary
License: https://creativecommons.org/licenses/by-sa/4.0/

noun

By PlainSpell · According to Wiktionary data (CC BY-SA) · analyzed May 6, 2026

The verdict

“smoothness” has 14 generated spelling variants in the English index at frequency #35,084. The variants make it a useful spelling check.

#35,084
frequency rank, English: 54,294
“S” headwords: 14
tracked misspellings

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The condition of being smooth; the degree or measure of said condition.

Corpus desk

Index EN-smoothness · smoothness · English

smoothness · rank #35,084 · 14 variants · 0 confusables

FREQ-MID #35,084
LEN-MEGA 10 letters
VOW-3 3 vowels
CONFUS-0 No pairs
VAR-HIGH 14 variants
BOOK-DENSE 54,294
PHOTO-FINISH smelter

Nearest frequency peer: smelter (-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.

SLC

64,920
slung

64,919
smelter

64,918
smoothness

64,917
smother

64,916
SoA

64,913

What this shows Bars show where “smoothness” sits against the nearest ranked English headwords in the FrequencyWords band, not a reprint of letter-browse containment.

Key facts for smoothness
Property	Value
Headword	smoothness
Language	English
Part of speech	Noun
Letters	10
Frequency rank	#35,084
Misspellings tracked	14
Confusable pairs	0
Source	Wiktionary (kaikki.org)

Where “smoothness” 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). smoothness lands here:

#35,084

#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 14 spelling variants around smoothness, anoun. Corpus frequency is #35,084 among 54,294 “S” headwords. Wiktionary lists 3 senses, so context still picks the gloss.

Our generated misspelling index lists 14 likely wrong-spelling variants for smoothness, with forms such as "msoothness", "smmoothness", and "smoohtness". 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 is not paired with a close-neighbour confusable in our dataset, suggesting its spelling stands apart enough that readers rarely confuse it with something else.

Etymologically, the entry records: From Middle English smothenesse; equivalent to smooth + -ness. Compare Old English smēþnes (“smoothness, a smooth place, a level surface”). The correct English form is smoothness, spelled S-M-O-O-T-H-N-E-S-S.

Definition

1
The condition of being smooth; the degree or measure of said condition.
2
The highest order of derivative (the differentiability class) over a given domain.
3
The quantity measured by the modulus of smoothness.

Etymology

From Middle English smothenesse; equivalent to smooth + -ness. Compare Old English smēþnes (“smoothness, a smooth place, a level surface”).

Antonyms

jerkiness roughness

This word in other languages

Glätte(Deutsch)suavidade(Português)

Common misspellings

Also misspelled as:

msoothness
smmoothness
smoohtness
smoothenss
smoothhness
smoothnes
smoothnness
smoothnses
smootnhess
smootthness
smothness
smotohness
somothness
ssmoothness

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of smoothness - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.

Edit distance from "smoothness"

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.

PlainSpell is rendered directly from structured Wiktionary extracts and open word-frequency lists, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 6, 2026. Primary sources: Wiktionary (via kaikki.org) and FrequencyWords.

Frequently Asked Questions

How do you spell "smoothness"?

"smoothness" is spelled S-M-O-O-T-H-N-E-S-S.

What does "smoothness" mean?

As a noun, "smoothness" means: The condition of being smooth; the degree or measure of said condition.

What are common misspellings of "smoothness"?

Common misspellings include "msoothness", "smmoothness", "smoohtness", "smoothenss", "smoothhness". The correct spelling is "smoothness".

What is the origin of the word "smoothness"?

From Middle English smothenesse; equivalent to smooth + -ness. Compare Old English smēþnes (“smoothness, a smooth place, a level surface”). 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 "smoothness", not the corpus desk frequency band.

Same letter count

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

Shenandoah#35,076 Stillwater#35,098 stunningly#35,100 scavenging#35,065

Similar misspelling depth

Headwords with a similar count of attested misspellings (14 here; floor ≥5).

treatable14 variants unaccounted14 variants undergrad14 variants paedophile14 variants

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.