Easy host or confused prophet (10)
I believe the answer is:
soothsayer
'prophet' is the definition.
(I've seen this before)
'easy host or confused' is the wordplay.
'confused' indicates an anagram.
'easy'+'host'+'or'='easyhostor'
'easyhostor' with letters rearranged gives 'SOOTHSAYER'.
(Other definitions for soothsayer that I've seen before include "He warned Caesar" , "One foreseeing future" , "Prophet" , "forecaster" .)