
...would be that you end up a lonely,
BITTER old man with no progeny.
The Big Bang Theory Season 1, Episode 17

you'd be less BITTER about him winning.
The Big Bang Theory Season 10, Episode 9

and I'm BITTER because my ex
got involved with my sister
Money Heist Season 1, Episode 6

You BITTER, envious little man.
The Big Bang Theory Season 12, Episode 23

To the BITTER end!
Westworld Season 2, Episode 2