temporizer

1 a person who dexterously and expediently changes or adopts opinions the kind of temporizer who determines his position on a political issue by taking a look at the polls Synonyms chameleon, chancer [British], opportunist, acrobat, timeserver, trimmer, weathercockRelated Words egoist, egotist, self-seeker; conniver, machinator, plotter, schemer

2 one who does things only for his own benefit and with little regard for right and wrong a lifelong temporizer, he was for the war as long as it was popular and against it the minute the tide of public opinion went the other way Synonyms bottom-feeder, chancer [British], opportunist, self-seekerRelated Words egocentric, egoist, egotist; conniver, machinator, plotter, schemer; barracuda, shark; hanger-on, leechNear Antonyms altruist