City's providing support for toilets, just about (7)
I believe the answer is:
loosely
'about' is the definition.
Both the answer and definition are adverbs. Perhaps you can see a link between them that I can't see?
'city's providing support for toilets' is the wordplay.
'city' becomes 'ely' (Ely is a city in Cambridgeshire).
'providing support for' means one lot of letters go next to another (in a down clue, some letters go below others).
'toilets' becomes 'loos' (loo can informally mean a toilet).
'ely' after 'loos' is 'LOOSELY'.
'just' acts as a link.
Can you help me to learn more?
(Other definitions for loosely that I've seen before include "Vaguely" , "Not exactly" , "without restraint" , "Generally" , "Approximately" .)