imperceptible
adjective, noun
Forms imperceptibles
- adjective Not perceptible, not detectable, too small in magnitude to be observed. “We all missed the imperceptible shake of his head as he tried to warn us without being seen.”
- adjective Beyond the purview of man; too great and all-encompassing to be perceived.
- noun Something that is imperceptible.
Synonyms
imperceivable undistinguishable unperceivable cosmic indiscernible insensible undetectable undiscernible
Antonyms
Etymology
Inherited from Middle English imperceptible, from Middle French imperceptible and its etymon Medieval Latin imperceptibilis. By surface analysis, im- + perceptible.
Webster’s 1913
- adjective Not perceptible; not to be apprehended or cognized by the souses; not discernible by the mind; not easily apprehended.
Etymology [Pref. im- not + perceptible: cf. F. imperceptible.]
Sources: Wiktionary · Webster’s 1913 — from the Wiktionary entry “imperceptible”, CC BY-SA 4.0. Details