Usually means: Not perceivable by any means.
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We found 12 dictionaries that define the word undetectable:

General (11 matching dictionaries)
  1. undetectable: Merriam-Webster
  2. undetectable: Oxford Learner's Dictionaries
  3. undetectable: Collins English Dictionary
  4. undetectable: Vocabulary.com
  5. Undetectable, undetectable: Wordnik
  6. undetectable: Wiktionary
  7. undetectable: Dictionary.com
  8. undetectable: Rhymezone
  9. undetectable: FreeDictionary.org
  10. undetectable: Mnemonic Dictionary
  11. undetectable: TheFreeDictionary.com

Medicine (1 matching dictionary)
  1. AIDS Medical Glossary and Drug Chart (No longer online)

Google, News, Images, Wikipedia, Reddit, BlueSky
Definitions from Wiktionary (undetectable)

▸ adjective:  Unable to be detected; not detectable.

Similar:
indiscernible, unperceivable, imperceptible, insensible, invisible, unseeable, blind, indetectable, indetectible, nondetectable, more...

Opposite:
detectable, noticeable, observable, apparent, evident

Types:
latent, invisible, unseen, unobserved, unperceived, unnoticed, more...

Phrases:
Undetectable Firearms Act, more...

Colors:
    ghost white,     camo brown,     whisper white,     dusk purple,     twilight blue, more...



▸ Words similar to undetectable

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▸ Wikipedia articles (New!)

▸ Popular nouns described by undetectable

▸ Words that often appear near undetectable

▸ Rhymes of undetectable

▸ Invented words related to undetectable

Similar:
indiscernible, unperceivable, imperceptible, insensible, invisible, unseeable, blind, indetectable, indetectible, nondetectable, more...

Opposite:
detectable, noticeable, observable, apparent, evident

Types:
latent, invisible, unseen, unobserved, unperceived, unnoticed, more...

Phrases:
Undetectable Firearms Act, more...

Colors:
    ghost white,     camo brown,     whisper white,     dusk purple,     twilight blue, more...



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