Vocabulary of large person who used to be revered? (7)
I believe the answer is:
lexicon
'vocabulary' is the definition.
(I've seen this before)
'large person who used to be revered?' is the wordplay.
I cannot really understand how this works, but
'large' could be 'l' and 'l' is found within the answer.
'person' could be 'ex' (ex is a kind of person) and 'ex' is located in the answer.
The remaining letters 'icon' is a valid word which might be clued in a way I don't see.
This may be the basis of clue (or it may be nonsense).
'of' is the link.
(Other definitions for lexicon that I've seen before include "Book of words" , "set of terms" , "Nice lox (anag)" , "Word reference book" , "Dictionary, especially of ancient languages" .)