Expression of puzzlement in torture with love (5)
I believe the answer is:
hello
'expression of puzzlement' is the definition.
'hello' can be an answer for 'expression' (I have seen 'Expression of greeting ' mean 'hello' so perhaps 'expression' could also mean 'hello'). I'm unsure of the 'of puzzlement' bit.
'torture with love' is the wordplay.
'torture' becomes 'hell'.
'with' is a charade indicator (letters next to each other).
'love' becomes 'o' (love means zero in tennis).
'hell'+'o'='HELLO'
'in' acts as a link.
Can you help me to learn more?
(Other definitions for hello that I've seen before include "Expression of greeting" , "Common greeting as on phone" , "Conversation starter" , "Meeting greeting" , "opener?" .)