More curious, about to reappear (5)
I believe the answer is:
recur
'reappear' is the definition.
(thesaurus)
'more curious about' is the wordplay.
'about' indicates a hidden word (the clue goes around or about the answer).
'RECUR' is hidden in the letters of 'more curious'.
'to' is the link.
(Other definitions for recur that I've seen before include "Persist" , "Return to mind" , "come back to one's mind" , "Be repeated" , "Happen again (5)" .)