alike, same, twin, interchangeable; see alike 1, equal.
vague, invisible, imperceptible; see imperceptible, obscure 1.
Incapable of being apprehended by the mind or the senses:
Yes, I'd like to receive Word of the Day emails from YourDictionary.com
By continuing, you agree to our
Please set a username for yourself.
People will see it as Author Name with your public flash cards.