Fine two boys (5)

I believe the answer is:

regal

'fine' is the definition.
(thesaurus)

'two boys' is the wordplay.
'two boys' can mean two replacements for 'boy'.
'boy' becomes 'reg' ().
'boy' becomes 'al'.
'reg'+'al'='REGAL'

(Other definitions for regal that I've seen before include "King-like" , "Fit for a king" , "Befitting a monarch" , "Royal - 5 down (anag)" , "Fit for a monarch" .)

I've seen this clue in the Evening Standard.

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