How to analyse "Shot dead" [closed]

What kind of a term is 'shot dead'?

"He was shot dead." Is 'dead' an adverb here?

"He shot Sam dead." This is like a phrasal verb, but 'dead' isn't a preposition or particle.

Is 'shot dead' some weird kind of compound verb, or is 'dead' an exotic adverb, or is something else going on?

This is just like "His design improvement made the car fast", with "fast" modifying "car".

An instructive contrast is "He drove the car fast", in which "fast" is an adverb modifying "drive".

I don't think "dead" can be used to modify a verb, though it can be used as a "degree adverb" modifying an adjective, eg, "dead tired"

English has a grammatical structure for describing the condition(s) that can occur to a person, animal or thing. It is a passive construction (subject + passive: be + adverb) where an adverb is appended after the action verb the subject has experienced or been subjected to. They all function like: He was shot dead. Here are some examples I've generated or recalled:

He was sprung loose.

He was eaten alive.

He was beaten silly.

She was carried high.

They were charmed fast.

The diamond was made fast.

We are tickled pink. [my favourite]

They are punched out cold.

He is left cold.

The banner was hoisted aloft

And that old favorite: He was scared shitless

You are left speechless.

They were raised stupid.

It can be argued that what appears to be an adjective is actually an adverb because in the examples those qualifiers answer the question: HOW was X done to the subject? It's interesting to note that many of these are not situations one would want to find oneself in....ain't English great? :) I am struck dumb by it.