invalid

/ɪnˈvæl.ɪd/

//ɪnˈvæl.ɪd// adj

By · According to Wiktionary data (CC BY-SA) ·

"invalid" is a 7-letter English headword indexed on PlainSpell.

The verdict

“invalid” has 10 generated spelling variants in the English index at frequency #9,908. The variants make it a useful spelling check.

#9,908
frequency rank, English
2,140
“I” headwords
10
tracked misspellings
2
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Not valid; not true, correct, acceptable or appropriate.

Corpus desk

Index EN-invalid · invalid · English

invalid · rank #9,908 · 10 variants · 2 confusables

  • FREQ-COMMON #9,908
  • LEN-LONG 7 letters
  • VOW-3 3 vowels
  • CONFUS-LOW 2 pairs
  • VAR-MID 10 variants
  • BOOK-MID 2,140
  • PHOTO-FINISH jade

Nearest frequency peer: jade (+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.

Rank peers near misspelling magnet “invalid”

Same rarity band: useful when a typo lands on a peer headword

corpus weight

What this shows “invalid” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

invalid vs inlaid
71% similar
invalid vs invaded
71% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for invalid
PropertyValue
Headwordinvalid
LanguageEnglish
Part of speechAdjective
IPA/ɪnˈvæl.ɪd/
Letters7
Frequency rank#9,908
Misspellings tracked10
Confusable pairs2
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “invalid”

Word frequency stretches from the small set of words we reach for constantly (left) out to the long tail barely used once in a while (right).invalidlands here:

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

The axis is logarithmic, with each marked tick roughly ten times rarer than the last. Same rarity band neighbours include “jade” (#9,909), “jointly” (#9,910), “ideals” (#9,905). Among 2,140 “I” headwords, “invalid” is #9,908. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 10 spelling variants around invalid (IPA /ɪnˈvæl.ɪd/), anadjective. Corpus frequency is #9,908 among 2,140 “I” headwords. Dominant gloss: "Not valid; not true, correct, acceptable or appropriate.".

Our generated misspelling index lists 10 likely wrong-spelling variants for invalid, with forms such as "inavlid", "innvalid", and "invaild". Every one of these variants traces to a single-character edit -- an added or dropped letter, a swapped consonant, or a vowel swap -- the kind of slip a spell-checker is built to catch. It also participates in 2 confusable-pair relationships, "inlaid", "invaded", where similar look or sound leads writers to substitute one word for another in context.

Etymologically, the entry records: From in- + valid. The correct English form is invalid, spelled I-N-V-A-L-I-D.

Definition

  1. 1
    Not valid; not true, correct, acceptable or appropriate.

Recorded use

Wiktionary examples

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

  1. Your argument is invalid because it uses circular reasoning.
  2. This invalid contract cannot be legally enforced.

Etymology

From in- + valid.

Synonyms

nonvaliddisallowed

Antonyms

valid

This word in other languages

inválido(Español)invalide(Français)ungültig(Deutsch)

Common misspellings

Also misspelled as:

  • inavlid
  • innvalid
  • invaild
  • invaldi
  • invalidd
  • invallid
  • invlaid
  • invvalid
  • ivnalid
  • nivalid

Misspelling Pattern Breakdown

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

inavlid2innvalid1invaild2invaldi2invalidd1invallid1invlaid2invvalid1
Edit distance from "invalid"

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 "invalid"?
"invalid" is spelled I-N-V-A-L-I-D. The IPA pronunciation is /ɪnˈvæl.ɪd/.
What does "invalid" mean?
As an adjective, "invalid" means: Not valid; not true, correct, acceptable or appropriate.
What words are commonly confused with "invalid"?
"invalid" is commonly confused with "inlaid", "invaded". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "invalid"?
The IPA (International Phonetic Alphabet) transcription for "invalid" is /ɪnˈvæl.ɪd/. 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 "invalid"?
From in- + valid. 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 "invalid", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 7 letters (nearest by frequency rank).

jointly#9,910newborn#9,923Newport#9,924exclude#9,888

Similar misspelling depth

Headwords with a similar count of attested misspellings (10 here; floor ≥5).

penguin10 variantsPython10 variantsdepths10 variantsshouted10 variants

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

Source: FrequencyWords open word-frequency list