Crossword Genius

One agreement is perfect (5)

Ross

I believe the answer is:

ideal

'is perfect' is the definition.
(similar in meaning)

'one agreement' is the wordplay.
'one' becomes 'i' (Roman numeral).
'agreement' becomes 'deal' (deal is a kind of agreement).
'i'+'deal'='IDEAL'

(Other definitions for ideal that I've seen before include "Something that one hopes to attain" , "Exemplary" , "immaculate" , "supreme" , "Paradigm" .)

I've seen this clue in The Hindu.
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