Put off by lines on the right-hand side (6)
I believe the answer is:
dexter
'on the right-hand side' is the definition.
(I've seen this before)
'put off by lines' is the wordplay.
I cannot really see how this works, but
'by' could be 'x' (multiplication sign) and 'x' is found in the answer.
'put off' could be 'deter' (I've seen this before) and 'deter' is located in the leftover letters.
No letters remain.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for dexter that I've seen before include "In heraldry, of or on the right side" , "Colin --, Inspector Morse creator" , "breed of cattle from Ireland" , "televised antihero, > right?" , "Breed of cattle; right" .)