Oddly, fear left with one in paradise? (9)
I believe the answer is:
afterlife
'paradise?' is the definition.
(I've seen this before)
'oddly fear left with one' is the wordplay.
'oddly' is an anagram indicator.
'with' means one lot of letters goes inside another.
'one' becomes 'I' (Roman numeral).
'fear'+'left'='fearleft'
'fearleft' anagrammed gives 'afterlfe'.
'afterlfe' going around 'i' is 'AFTERLIFE'.
'in' is the link.
(Other definitions for afterlife that I've seen before include "Post-death existence" , "Existence following death" , "Hoped-for future" , "Existence beyond the grave" , "Existence beyond death" .)