Having limited calories, get better? Exactly (9)

I believe the answer is:

literally

'exactly' is the definition.
(thesaurus)

'having limited calories get better?' is the wordplay.
'having limited calories' becomes 'lite'.
'get better?' becomes 'rally' (I've seen this before).
'lite'+'rally'='LITERALLY'

(Other definitions for literally that I've seen before include "Without exaggeration" , "Absolutely" , "Verbatim" , "Exactly as stated" , "Actually, really" .)

I've seen this clue in The Times.

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