KEY: Subtile.
SYN: Fine, thin, rare, refined, volatile, delicate, nice, acute.
ANT: Coarse, thick, gross, crass, dense.
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KEY: Subtle.
SYN: Sly, artful, cunning, insinuating, wily, astute, nice, discriminating, crafty, fine, shrewd, sophistical, Jesuitical.
ANT: Open, frank, honest, artless, undiscriminating, rough, blunt, undiscerning, unsophisticated, simple.
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KEY: Subtract.
SYN: Withdraw, remove, deduct, take.