Crossword Genius

Frank in Stoke-upon-Trent worked overlooking river (9)

Ross

I believe the answer is:

outspoken

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

'frank' is the definition.
(I know that frank can be written as outspoken)

'stoke-upon-trent worked overlooking river' is the wordplay.
'stoke-upon' can be anagrammed to 'OUTSPOKEN'.
However, I am not sure how the anagram is indicated.

'in' acts as a link.

Can you help me to learn more?

(Other definitions for outspoken that I've seen before include "Blunt" , "Inclined to say exactly what one thinks" , "Describes one who always says what s/he thinks" , "Bold in speech" , "bluff" .)

I've seen this clue in The Telegraph.
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