
Well, not so much depressed
as LONELY.
The Big Bang Theory Season 4, Episode 22

I don't know what color LONELY is.
The Big Bang Theory Season 4, Episode 22

A man gets LONELY guarding the Wall.
Game of Thrones Season 5, Episode 7

in a futile attempt
to pick up some LONELY postdoc,
The Big Bang Theory Season 7, Episode 1

So you're keeping busy, you're not LONELY?
The Big Bang Theory Season 10, Episode 24