Crossword Genius

Room is appropriate for unworldly attire (10)

Ross

I believe the answer is:

spacesuits

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

'for unworldly attire' is the definition.
I can't tell whether this definition defines the answer.

'room is appropriate' is the wordplay.
'room' becomes 'space' (I've seen this in another clue).
'is appropriate' becomes 'suits' (to suit is to be appropriate for).
'space'+'suits'='SPACESUITS'

Can you help me to learn more?

I've seen this clue in The Daily Express.
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