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KEY: Politic.
SYN: Prudent, wise, sagacious, provident, diplomatic, judicious, cunning, wary, well devised, discreet.
ANT: Imprudent, unwise, improvident, undiplomatic, impolitic.
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KEY: Pollute.
SYN: Befoul, taint, poison, corrupt, tarnish, stain, contaminate, soil, vitiate, deprave.
ANT: Purify, clarify, disinfect, filter.
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KEY: Poltroon.