Definition of imperceptible in English:

imperceptible

adjective

  • So slight, gradual, or subtle as not to be perceived.

    ‘his head moved in an almost imperceptible nod’
    • ‘I could hear the call going along the line, but then at the final moment, instead of ringing, there was a strange, almost imperceptible hiccup.’
    • ‘You put things out in the world hoping that it might be relevant to someone, but these things are subtle, imperceptible.’
    • ‘She stole a glance at him and he gave her an almost imperceptible nod.’
    • ‘There was an almost imperceptible shuffle on the stairs.’
    • ‘On these repeat visits, subtle qualities gradually reveal themselves which were initially almost imperceptible.’
    • ‘Yet the incursions on free speech can be insidious and imperceptible.’
    • ‘If that's not the case - well, it's a lot of money to spend on what, for me, turned out to be an almost imperceptible difference.’
    • ‘By appearance it's an almost imperceptible, narrow slot in the pavement that runs alongside a sidewalk from the bottom to the top of a hill.’
    • ‘My shadow, briefly cutting sunlight, changes the land's chemistry in imperceptible ways that make us one.’
    • ‘The impact would be nearly imperceptible at first, but it'd be there, and significant enough to gum things up.’
    • ‘The gradient is, to a walker, an imperceptible one in 50.’
    • ‘It was subtle, almost imperceptible from where we were sitting, but I noticed it and so did Lori.’
    • ‘He lived in a world of fine gradations and imperceptible shades.’
    • ‘Without museums, the skills of the sculptor and the various dialects of tribes in the country would have been imperceptible now, he said.’
    • ‘The line between rock musicians and seven-year-olds is often imperceptible.’
    • ‘As for the winters, though, I find I relish them, and can't imagine living anywhere in which the seasons are so slight as to be imperceptible.’
    • ‘A slight almost imperceptible vibration of the vessel was felt.’
    • ‘The law now seems clear, however, that so long as the change is gradual and imperceptible the doctrine applies.’
    • ‘I think there's an imperceptible incline, which makes sense as I was following the river upstream, so no cruising.’
    • ‘Almost imperceptible on screen, it is actually made up of tiny chickens' feet and is repeated on the buttons of her dress.’
    unnoticeable, undetectable, indistinguishable, indiscernible, unapparent, inappreciable, invisible, inaudible, impalpable, unobtrusive, impossible to detect
    View synonyms

Origin

Late Middle English: from French, or from medieval Latin imperceptibilis, from in- ‘not’ + perceptibilis, from the verb percipere (see perceive).

Pronunciation

imperceptible

/ɪmpəˈsɛptɪb(ə)l/