ANT: Exhaust, deprive, drain, dissatisfy, stint, vacate, misappoint, subside, shrink, ebb, evaporate, diminish.
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KEY: Filter.
SYN: Strain, percolate, refine, distil, ooze, exude, leak, depurate, defecate, clarify.
ANT: Befoul, muddle, disturb, thicken.
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KEY: Filthy.
SYN: Dirty, nasty, dingy, impure, unclean, squalid, foul.
ANT: Pure, sweet, clean.
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