overwithhold

(ōˌvər-wĭth-hōldˈ, -wĭÞ-)

verb o·ver·with·held (-hĕldˈ), o·ver·with·hold·ing, o·ver·with·holds
verb, transitive
  1. To deduct (an amount in withholding tax) beyond the tax owed.
  2. To subject to overwithholding.
verb, intransitive
To deduct too much withholding tax.
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