SYN: Exactness, nicety, preciseness, accuracy, [See ACCURACY].
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KEY: Preclude.
SYN: Prevent, obviate, bar, debar, impede, hinder.
ANT: Admit, promote, further, advance.
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KEY: Precocious.
SYN: Premature, predeveloped, overforward.
ANT: Tardy, backward, slow-growing, crude.
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