Crossword Genius

In secret I'd developed rash (10)

Ross

I believe the answer is:

indiscreet

'rash' is the definition.
(thesaurus)

'in secret i'd developed' is the wordplay.
'developed' indicates anagramming the letters.
'secret'+'id'='secretid'
'secretid' anagrammed gives 'discreet'.
'in'+'discreet'='INDISCREET'

(Other definitions for indiscreet that I've seen before include "Tactless" , "Imprudent -- 10 across (anag)" , "Too ready to reveal secret things" , "Too ready to tell secrets" , "shameless" .)

I've seen this clue in The Telegraph.
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