We don't have synonyms for negging yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are nagging, begging and legging.
(N) :
("to neg", meaning "negative feedback") an act of emotional manipulation whereby a person makes a deliberate backhanded compliment or otherwise flirtatious remark to another person to undermine their confidence and attempt to engender in them a need for the manipulator's approval.
(N) :
("to neg", meaning "negative feedback") an act of emotional manipulation whereby a person makes a deliberate backhanded compliment or otherwise flirtatious remark to another person to undermine their confidence and attempt to engender in them a need for the manipulator's approval.