undetectable
adjective
undetectable is spelled U-N-D-E-T-E-C-T-A-B-L-E. The wrong spelling people search most is undetecable: about 20 Bing searches a month in the United States (September 2025 to August 2026), about 1 in 31 of all searches for the word. Undetectable is an adjective meaning “Unable to be detected; not detectable”.
How many letters and syllables are in undetectable?
| Letters | 12: U-N-D-E-T-E-C-T-A-B-L-E |
|---|---|
| Syllables | 5 (from its American pronunciation) |
| In writing | about once in every 1 million words; the 35,748th most frequent word form |
| Wrong spellings searched | 2; the most searched, undetecable, about 20 Bing searches a month (all of them) |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation and the CMU Pronouncing Dictionary; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media); Bing searches in the United States: the average month from September 2025 to August 2026 (Microsoft Advertising keyword data through DataForSEO, read September 30, 2026).
How do you spell undetectable?
Undetectable is spelled U-N-D-E-T-E-C-T-A-B-L-E. 2 wrong spellings are searched or written often enough to measure; together they are about 1 in 21 of the searches for undetectable in either form.
Bing searches in the United States: the average month from September 2025 to August 2026 (Microsoft Advertising keyword data through DataForSEO, read September 30, 2026). Wrong spellings are taken from Wiktionary entries tagged "misspelling" and its obsolete or nonstandard forms, Wikipedia's Lists of common misspellings and the codespell dictionary, then measured. The proofreader's marks show the change that corrects each one.
How common is undetectable?
Undetectable appears about once in every 1 million words in written English, the 35,748th most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How do you pronounce undetectable?
Undetectable has 5 syllables (counted from its American pronunciation in the CMU Pronouncing Dictionary).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Vealhurl-undetectable.wav, Wikimedia Commons (author and licence on each file's page).
Forms of undetectable
- more undetectable comparative
- most undetectable superlative
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does undetectable mean?
The meanings the English Wiktionary records, quoted as written there (source below).
adjective
- 1
Unable to be detected; not detectable.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Undetectable in Spanish, French, German and Portuguese
In the sense Unable to be detected:
| Language | Words |
|---|---|
| French | indétectable |
| Portuguese | indetectável, indetetável |
| Spanish | indetectable |
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.
Where does undetectable come from?
From un- + detectable.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).