Curates clap wildly? That’s impressive (11)
I believe the answer is:
spectacular
'impressive' is the definition.
(similar in meaning)
'curates clap wildly?' is the wordplay.
'wildly?' indicates anagramming the letters (I've seen 'wildly' mean this).
'curates'+'clap'='curatesclap'
'curatesclap' with letters rearranged gives 'SPECTACULAR'.
'that's' acts as a link.
(Other definitions for spectacular that I've seen before include "Impressive, striking" , "Strikingly impressive" , "Lavish production" , "Visually astounding" , "really striking" .)