imperceptible
"imperceptible" is a 13-letter English headword indexed on PlainSpell.
The verdict
“imperceptible” is an uncommon English word, ranked #53,617 in English word frequency and used as an adjective.
- #53,617
- frequency rank, English
- 13
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Not perceptible, not detectable, too small in magnitude to be observed.
| Property | Value |
|---|---|
| Headword | imperceptible |
| Language | English |
| Part of speech | Adjective |
| Letters | 13 |
| Frequency rank | #53,617 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “imperceptible” sits in English frequency
Spelling & Dictionary Insight
The English entry for imperceptible is 13 letters long, classified as an adjective. Corpus data places it at rank #53,617 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 2 distinct senses for this headword, so context determines which meaning a reader should apply.
No generated misspelling entries exist for imperceptible in our index, suggesting the orthography follows predictable English patterns. This headword has no recorded confusable partner, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.
Etymologically, the entry records: Inherited from Middle English imperceptible, from Middle French imperceptible and its etymon Medieval Latin imperceptibilis. By surface analysis, im- + perceptible. The correct English form is imperceptible, spelled I-M-P-E-R-C-E-P-T-I-B-L-E.
Definition
- 1Not perceptible, not detectable, too small in magnitude to be observed.
- 2Beyond the purview of man; too great and all-encompassing to be perceived.
Etymology
Inherited from Middle English imperceptible, from Middle French imperceptible and its etymon Medieval Latin imperceptibilis. By surface analysis, im- + perceptible.
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
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Using “imperceptible”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is I-M-P-E-R-C-E-P-T-I-B-L-E - every other letter order is a misspelling in standard orthography.
- 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.