fluidity

/fluːˈɪd.ə.ti/

//fluːˈɪd.ə.ti// noun

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

The verdict

“fluidity” is a moderately-common English word, ranked #32,808 in English word frequency and used as a noun.

#32,808
frequency rank, English
8
letters
12
tracked misspellings

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The state of being fluid rather than viscous

Key facts for fluidity
PropertyValue
Headwordfluidity
LanguageEnglish
Part of speechNoun
IPA/fluːˈɪd.ə.ti/
Letters8
Frequency rank#32,808
Misspellings tracked12
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “fluidity” 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). fluidity lands here:

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

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

Spelling & Dictionary Insight

The English entry for fluidity is 8 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /fluːˈɪd.ə.ti/. Corpus data places it at rank #32,808 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 3 distinct senses for this headword, so context determines which meaning a reader should apply.

Our generated misspelling index lists 12 likely wrong-spelling variants for fluidity, with forms such as "ffluidity", "fliudity", and "flluidity". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. No confusable counterpart is on file for this word, since nothing in our dataset looks or sounds close enough to cause mix-ups.

Etymologically, the entry records: From French fluidité. The correct English form is fluidity, spelled F-L-U-I-D-I-T-Y.

Definition

  1. 1
    The state of being fluid rather than viscous
  2. 2
    A measure of the extent to which something is fluid. The reciprocal of its viscosity.
  3. 3
    The quality of being fluid or free-flowing

Etymology

From French fluidité.

Antonyms

This word in other languages

Common misspellings

Also misspelled as: ffluidity,fliudity,flluidity,fludiity,fluiddity,fluiditty,fluidityy,fluidiyt,fluidtiy,fluiidty,fulidity,lfuidity

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of fluidity - 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.

ffluidity1fliudity2flluidity1fludiity2fluiddity1fluiditty1fluidityy1fluidiyt2
Edit distance from "fluidity"

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 "fluidity"?
"fluidity" is spelled F-L-U-I-D-I-T-Y. The IPA pronunciation is /fluːˈɪd.ə.ti/.
What does "fluidity" mean?
As a noun, "fluidity" means: The state of being fluid rather than viscous
What are common misspellings of "fluidity"?
Common misspellings include "ffluidity", "fliudity", "flluidity", "fludiity", "fluiddity". The correct spelling is "fluidity".
How do you pronounce "fluidity"?
The IPA (International Phonetic Alphabet) transcription for "fluidity" is /fluːˈɪd.ə.ti/. 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 "fluidity"?
From French fluidité. 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 “fluidity”

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

  • The one correct English spelling is F-L-U-I-D-I-T-Y - every other letter order is a misspelling in standard orthography.
  • Say it as /fluːˈɪd.ə.ti/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Browse more English words and confusable pairs in the same reference. English words
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 FrequencyWords open word-frequency list