not tangible; incapable of being perceived by the sense of touch, as incorporeal or immaterial things; impalpable.

not definite or clear to the mind

intangible arguments.

(of an asset) existing only in connection with something else, as the goodwill of a business.

something intangible, esp. an intangible asset

Intangibles are hard to value.

adjective

definite , obvious , palpable , perceptible , tangible

adjective

abstract , abstruse , airy , dim , eluding , elusive , ethereal , evading , evanescent , evasive , hypothetical , impalpable , imperceptible , imponderable , inappreciable , incorporeal , indeterminate , insensible , invisible , rare , shadowy , slender , slight , unapparent , uncertain , unobservable , unreal , unsubstantial , unsure , vague , indiscernible , indistinguishable , unnoticeable , aeriform , amorphous , diaphanous , ephemeral , immaterial , indefinite , insubstantial , nebular , nebulous , unknowable , vaporous