
I think the word you're
looking for is... "INVISIBLE."
The Big Bang Theory Season 5, Episode 17

...this is for the INVISIBLE kids.
The Big Bang Theory Season 8, Episode 22

INVISIBLE to everyone.
Westworld Season 2, Episode 8

will break his
INVISIBLE chains.
Vikings Season 1, Episode 6

that the Invisible Girl
is standing there with us.
The Big Bang Theory Season 7, Episode 14