Awfully lonely chap with no yen for communication (5,4)

'communication' is the definition.
(phone call is a kind of communication)

'awfully lonely chap with no yen' is the wordplay.
'awfully' is an anagram indicator.
'with no' indicates named letters should be taken away.
'yen' becomes 'y'.
'lonely'+'chap'='lonelychap'
'lonelychap' with 'y' taken out is 'lonelchap'.
'lonelchap' anagrammed gives 'PHONE CALL'.

'for' is the link.