Thoroughly wanting $1000 invested to produce psychological thriller (7)
I believe the answer is:
vertigo
'thriller' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for vertigo that I've seen before include "Dizziness due to disorder in sense of balance" , "Sensitivity to heights" , "Dizzy sensation brought on by heights" , "that makes it hard to stand" , "unbalanced feeling" .)