offset - definition and synonyms

verb [transitive] 

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present tense
present participleoffsetting
past tenseoffset
past participleoffset
  1. [often passive] to balance the effect of something, with the result that there is no advantage or disadvantage

    Falling sales in Thailand were offset by strong performances in other markets.

    offset something against something:

    Donations to charities can be offset against tax.