Crossword Genius

Good sense to accept run in Tesla, say, having some qualms? (7)

Ross

I believe the answer is:

nervous

I'm a little stuck... Click here to teach me more about this clue!

'tesla say having some qualms?' is the definition.
I can't tell whether this definition defines the answer.

'good sense to accept run' is the wordplay.
'good sense' becomes 'nous ' (nous is a kind of good sense).
'to accept' means one lot of letters goes inside another.
'run' becomes 'erv' (I can't explain this - if you can you should give a lot more credence to this answer).
'nous' enclosing 'erv' is 'NERVOUS'.

'in' acts as a link.

Can you help me to learn more?

(Other definitions for nervous that I've seen before include "Jittery" , "Feeling or showing anxiety" , "in a stew" , "Frightened" , "Agitated and apprehensive" .)

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