verb: (Britain slang) To annoy or irritate deliberately.
verb: (transitive, seduction community) To express or imply a negative value judgement of someone to make them desire one's approval, especially when trying to pick up a date.
verb: (nonstandard, Internet slang, transitive) To leave negative feedback in a reputation tracking system.
noun: (seduction community) An expression or implication that one has a negative value judgement of someone in order to make them desire one's approval, especially when trying to pick up a date.
noun: (debating) Clipping of negative. [Refusal or withholding of assents; prohibition, veto]