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Verb: deduct  di'dúkt
  1. (arithmetic) make a subtraction
    "deduct this amount from my paycheque";
    - subtract, take off
  2. Retain and refrain from disbursing; of payments
    "My employer is deducting taxes";
    - withhold, recoup
  3. (logic) reason by deduction; establish by deduction
    - deduce, infer, derive

Derived forms: deducted, deducting, deducts

Type of: calculate, cipher, compute, conclude, cypher, figure [N. Amer], hold on, keep, reason, reason out, reckon, work out