1) Abstract 2) Difficult to grasp 3) French word used in English 4) Hard to pin down or identify 5) Impalpable 6) Lacking substance or reality 7) Not tangible 1) Abstract 2) Disembodied 3) Ethereal 4) Goodwill 5) Imaginary 6) Impalpable 7) Incorporeal 8) Indefinable 9) Nonmaterial 10) Nonphysical 11) Theoretical 12) Unidentifiable 13) Untangible 14) Untouchable 
• (a.) Not tangible; incapable of being touched; not perceptible to the touch; impalpable; imperceptible.
In·tan'gi·ble adjective [ Prefix in- not + tangible : confer French intangible .] Not tangible; incapable of being touched; not perceptible to the touch; impalpable; imperceptible. Bp. Wilkins. « A corporation is an artificial, invisible, intangible being.&#x...
[adj] - (of especially business assets) not having physical substance or intrinsic productive value 2. [adj] - incapable of being perceived by the senses especially the sense of touch 3. [adj] - hard to pin down or identify 4. [adj] - lacking substance or reality 5. [n] - assets that are saleable though not material or physic...
nonphysical adjective lacking substance or reality; incapable of being touched or seen; `that intangible thing--the soul`
[SAT terms] incapable of being perceived by the senses, especially touch assets that are saleable though not material or physical