At the end, English sea resort causes relaxation (4)
I believe the answer is:
ease
'relaxation' is the definition.
(synonyms)
'at the end english sea resort' is the wordplay.
'at' says to put letters next to each other.
'the end english' becomes 'e' (abbreviation. I am not sure about the 'end' bit.).
'resort' indicates an anagram.
'sea' is an anagram of 'ase'.
'e' next to 'ase' is 'EASE'.
'causes' acts as a link.
Can you help me to learn more?
(Other definitions for ease that I've seen before include "Absence of difficulty" , "Make less severe, comfort" , "Freedom from worries" , "Comfort and naturalness" , "Freedom from discomfort or anxiety" .)