intangible
Pronunciation: /ɪnˈtan(d)ʒɪb(ə)l/
adjective
- unable to be touched; not having physical presence: the moonlight made things seem intangible
- difficult or impossible to define or understand; vague and abstract: the rose symbolized something intangible about their relationship
- (of an asset or benefit) not constituting or represented by a physical object and of a value not precisely measurable: intangible business property like patents

Origin:
early 17th century (as an adjective): from French, or from medieval Latin intangibilis, from in- 'not' + late Latin tangibilis (see tangible)