Imperceptible

ahd-5
  • adjective. Impossible or difficult to perceive by the mind or senses.
  • adjective. So subtle, slight, or gradual as to be barely perceptible.
    • The Century Dictionary and Cyclopedia
  • Not perceptible; that cannot be perceived.
  • Incapable by nature of affecting the senses.
  • Too minute, fine, gradual, subtle, or evanescent to be discerned by the senses; producing an excitation of the nerves less than the threshold of sensation. See threshold.
  • noun. That which cannot be perceived with the naked eye, or realized by sensation.
    • the GNU version of the Collaborative International Dictionary of English
  • adjective. Not perceptible; not to be apprehended or cognized by the senses; not discernible by the mind; not easily apprehended.
    • Wiktionary, Creative Commons Attribution/Share-Alike License
  • adjective. Not perceptible, not detectable, too small in magnitude to be observed.
    • WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
  • adjective. impossible or difficult to perceive by the mind or senses
    • Word Usage
    "My brother rose to do so but he saw neither ewer nor basin; yet his host kept washing his hands with invisible soap in imperceptible water and cried,"
    Antonyms
    Words with the opposite meaning
    perceptible  
    cross-reference
    imperceptible increase  
    Same Context
    Words that are found in similar contexts
    abrupt  appreciable  convulsive  gradual  inaudible  
    Synonym
    Words with the same meaning
    atomic  behind the curtain  behind the scenes  camouflaged  concealed  
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