adjective. Not perceptible to the touch; intangible.

adjective. Difficult to perceive or grasp by the mind.

Incapable of being perceived by touch; wanting palpable substance or consistency; too unsubstantial or too fine to be felt.

Hence That cannot be grasped by the intellect; incomprehensible; intangible: as, impalpable distinctions.

Synonyms Imperceptible, intangible, unsubstantial.

adjective. Not palpable; that cannot be felt; extremely fine, so that no grit can be perceived by touch.

adjective. Not material; intangible; incorporeal.

adjective. Not apprehensible, or readily apprehensible, by the mind; unreal.

adjective. Not able to be perceived by the senses (especially by touch); intangible or insubstantial

adjective. imperceptible to the senses or the mind

adjective. not perceptible to the touch

adjective. incapable of being perceived by the senses especially the sense of touch

"If we want endless, satisfying blue, we must look up to where it dwells in impalpable space, shining like solid enamel, or liquid and vague."

elusive  imperceptible  subtle  unperceivable  

dreamlike  elusive  ethereal  ever-present  filmy  

airy  asomatous  astral  atomic  bodiless