Definition of undetectable in English:

undetectable

adjective

  • Not able to be detected.

    ‘in the other two patients the antibodies were undetectable after one year’
    ‘a virtually undetectable particle’
    • ‘In four months of observation, this orbital movement would be so slight as to be undetectable from Earth.’
    • ‘‘You could have fraud on a scale never seen before, and it will be completely undetectable,’ he said.’
    • ‘And there's another sound, too: a low, whispering rumble, almost undetectable.’
    • ‘It can often be dissolved in a drink and is undetectable.’
    • ‘Even if such a phenomenon were to exist, it would generally be considered to be undetectable by available statistical methods.’
    • ‘Harmless and humane, the cats simply don't like the sound, which is undetectable to the human ear.’
    • ‘Both believed they were using an undetectable drug and would never be caught.’
    • ‘I was beginning to get a little carsick, when we stopped with a slightly, almost undetectable, jerk.’
    • ‘He shrugged, and his eyes glimmered slightly with an undetectable sadness.’
    • ‘Then, slightly with a barely undetectable motion, she ran her fingertips across his neck.’
    • ‘The company claims this process takes just microseconds, making lag undetectable.’
    • ‘An isolated black hole is, of course, undetectable, except by its gravitational pull - the way it distorts space in its vicinity.’
    • ‘Rootkits are the ultimate backdoor, giving hackers ongoing and virtually undetectable access to the systems they exploit.’
    • ‘In doing so, he introduced an almost totally undetectable back door into the system’
    • ‘The word on the street is the drug dealer is about to import a huge quantity of altered cocaine that is undetectable to drug sniffer dogs.’
    • ‘Further, if they are undetectable by their taste, smell, or colour their attractiveness as poisons is enhanced.’
    • ‘Carbon monoxide is undetectable by the human senses: it is colourless, odourless, and tasteless.’
    • ‘His eyes met mine in the rearview mirror… and lingered there, casting me a small undetectable smile.’
    • ‘He didn't hear what the soldier said, it was in a low whisper that was undetectable from his position in the room.’
    • ‘The extra risk of developing cancer from low doses of ionising radiation is so small that it is undetectable in the population.’
    unnoticeable, imperceptible, invisible, inaudible, odorless, subtle, faint, obscure
    View synonyms

Pronunciation

undetectable

/ʌndɪˈtɛktəb(ə)l/