### Clue: Abstainer renounces love beside lofty seesaw (6)
### Answer: TEETER 
 ### Explanation: Definition: seesaw
 "teetotaller" **minus**(renounces) { "o"(representing 0;love in tennis scores) **plus**(beside) "tall"(lofty) }.
Defn: To move back and forth, or up and down.