TV series example of the word

The Big Bang Theory Season 1, Episode 16
Well, all right, but I don't see this as a promising endeavor.

The Big Bang Theory Season 2, Episode 1
Secret-keeping is a complicated endeavor. One has to be concerned...

The Big Bang Theory Season 2, Episode 13
Oh. This entire endeavor seems to have been an exercise in futility.

Westworld Season 2, Episode 4
along with the rest of this fucking endeavor.