SYN: Adjunct, annexation, supplement, addition, acquisition, increase, augmentation, accession.
ANT: Deduction, detraction, drawback, decrement, deterioration.
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KEY: Addition.
SYN: Accession, enlargement, increase, extension, accretion, appendage.
ANT: [See ADDITAMENT].
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KEY: Address \n.\
SYN: Tact, manners.
ANT: Awkwardness, unmannerliness.