Only some dared enter paradise (4)
I believe the answer is:
eden
'paradise' is the definition.
(synonyms)
'only some dared enter' is the wordplay.
'only some' says the answer is hidden in the clue.
'EDEN' can be found hidden inside 'dared enter'.
(Other definitions for eden that I've seen before include "Early garden - Cornish project" , "Former prime minister" , "Badly need the garden" , "Cornish garden; paradise" , "(Biblical) paradise" .)