ANT: Reflective, reminiscent, insensible, impercipient, inobservant, inapprehensive, insensitive.
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KEY: Percipient, [See PERCEPTIVE].
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KEY: Percolate.
SYN: Strain, niter, exude, ooze.
ANT: Absorb, retain, [See OOZE].
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KEY: Percussion.
SYN: Collision, shock, encounter, crash.