imperceptible

adjective
UK: /ˌɪmpəˈseptəbl/
US: /ˌɪmpərˈseptəbl/

  1. Very slight or gradual and therefore difficult to notice.

    1. The change in temperature was imperceptible at first.
    2. There was an imperceptible shift in his expression, but I couldn't read it.

  2. Impossible to perceive by the senses; not noticeable.

    1. The taste was imperceptible to the casual observer.
    2. The difference between the two shades of blue was imperceptible unless viewed closely.

Synonyms

unnoticeable indistinguishable subtle minute faint slight

Frequently Asked Questions

The word "imperceptible" in English means: Very slight or gradual and therefore difficult to notice., Impossible to perceive by the senses; not noticeable..

The phonetic transcription of "imperceptible" is /ˌɪmpəˈseptəbl/ in British English and /ˌɪmpərˈseptəbl/ in American English. Click the 🔊 button to hear both pronunciations.

Synonyms for "imperceptible": unnoticeable, indistinguishable, subtle, minute, faint, slight.

Example usage of "imperceptible": "The change in temperature was imperceptible at first.". More examples on the page.