intangible has 3 distinct synonyms spread across 3 of its 5 senses. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. Its one recorded opposite is tangible.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
(of especially business assets) not having physical substance or intrinsic productive value
“intangible assets such as good will”
incapable of being perceived by the senses especially the sense of touch
“the intangible constituent of energy”
lacking substance or reality; incapable of being touched or seen
“that intangible thing--the soul”
1 of the 5 recorded senses carries no synonym, antonym or related term, so it is not shown above. Every sense, with its definition and examples, is on the full entry for intangible.
Synonyms, antonyms and the broader and narrower relations for intangible come from Princeton University’s WordNet. Full sources and licences.
assets that are saleable though not material or physical