Crossword Genius

Different sizes under discussion (4)

Ross

I believe the answer is:

else

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'different' is the definition.
(synonyms)

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(Other definitions for else that I've seen before include "In addition; different" , "In addition, besides" , "Besides; different" , "Other than (what is under consideration)" , "Otherwise; different from" .)

I've seen this clue in The Hindu.
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