Suspend curate? It's ridiculous! (9)
I believe the answer is:
rusticate
'suspend' is the definition.
(rusticating is a kind of suspending)
'curate? it's ridiculous' is the wordplay.
'ridiculous' indicates anagramming the letters.
'curate'+'its'='curateits'
'curateits' anagrammed gives 'RUSTICATE'.
(Other definitions for rusticate that I've seen before include "Suspend from university" , "Rough up" , "leave town" , "Spend time in the country" , "Ban from college" .)