unobservable

unobservable

(ˌʌnəbˈzɜːvəbəl) adjincapable of observation; imperceptiblenthe unobservable something that cannot be observed

Thesaurus

Adj.

1.

unobservable - not accessible to direct observationimperceptible, unperceivable - impossible or difficult to perceive by the mind or senses; "an imperceptible drop in temperature"; "an imperceptible nod"; "color is unperceivable to the touch"

unobservable

adjectiveIncapable of being apprehended by the mind or the senses:impalpable, imperceptible, imponderable, inappreciable, indiscernible, indistinguishable, insensible, intangible, invisible, unnoticeable.