TV series example of the word

The Big Bang Theory Season 4, Episode 20
Everyone was set atwitter.
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Leonard, a moment ago you were dead set..."
The Big Bang Theory Season 8, Episode 20
I'm just gonna jump in here real quick. Leonard, a moment ago you were dead set...
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three grand."
The Big Bang Theory Season 5, Episode 17
The painting set me back three grand.

Game of Thrones Season 3, Episode 1
Did I set your ships ablaze?
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Game of Thrones Season 5, Episode 1
they'll set to work on tearing us apart.