#opportunist__self-seeker a person who places expediency above principle
supertype: selfish_person__selfishperson a person who is unusually selfish
subtype: backscratcher.opportunist someone who is willing to trade favors or services for mutual advantage
subtype: carpetbagger an outsider who seeks power or success presumptuously; "after the Civil War the carpetbaggers from the north tried to take over the south"
subtype: hustler__wheeler_dealer__wheelerdealer__operator (informal) a shrewd or unscrupulous person who knows how to circumvent difficulties
subtype: wire-puller one who uses secret influence (i.e. pulls wires or strings) for his own ends
subtype: timeserver one who conforms to current ways and opinions for personal advantage
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