Crossword Genius

Fine for driving Tory Howard when drunk (10)

Ross

I believe the answer is:

roadworthy

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'fine for driving' is the definition.
Both the answer and definition are adjectives. Perhaps they are linked in a way I don't understand?

'tory howard when drunk' is the wordplay.
'when drunk' indicates anagramming the letters (a drunken or disorderly form of the letters).
'tory'+'howard'='toryhoward'
'toryhoward' anagrammed gives 'ROADWORTHY'.

Can you help me to learn more?

(Other definitions for roadworthy that I've seen before include "fit to drive" , "fit for the journey?" , "Safe to be driven" .)

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