Crossword Genius

Is revised atlas so unprofitable? (2,1,4)

Ross

I believe the answer is:

I'm a little stuck... Click here to teach me more about this clue!

'unprofitable?' is the definition.
Both the answer and definition are adjectives. Perhaps you can see a link between them that I don't see?

'is revised atlas so' is the wordplay.
'is revised' is an anagram indicator.
'atlas'+'so'='atlasso'
'atlasso' anagrammed gives 'AT A LOSS'.

Can you help me to learn more?

(Other definitions for at a loss that I've seen before include "(Running) in deficit", "Uncertain what to do - bewildered", "how a bankrupt business was run", "Totally bewildered", "Unable to understand - no profit in it".)

I've seen this clue in Sydney Morning Herald.