impalpable

Adjective

• not perceptible to the touch
  • an impalpable pulse
    

• imperceptible to the senses or the mind
  • an impalpable cloud
    
  • impalpable shadows
    
  • impalpable distinctions
    
  • as impalpable as a dream
    

• incapable of being perceived by the senses especially the sense of touch
  • the intangible constituent of energy- James Jeans
    

Related words

• Antonyms: 
  palpable , tangible , touchable