ANT: Order, arrange, place, collocate, range.
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KEY: Reverse \n.\
SYN: Inversion, derangement, counterchange, counterposition, opposition, contrariety, contradiction, alteration, change, mutation, rear, back, evolution, counterexhibition.
ANT: Version, arrangement, sequence, order, collocation, position, perpetuation, continuance, stability, identity, uniformity, regularity, obverse, front.
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KEY: Reversible.
SYN: Changeable, exchangeable, counterchangeable, alterable, mutable, revocable, discretional.
ANT: Perpetual, unalterable, unchangeable, irreversible, absolute, undiscretional.
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