| Deduct 1. (v. t.) To lead forth or out. 2. (v. t.) To take away, separate, or remove, in numbering, estimating, or calculating; to subtract; -- often with from or out of. 3. (v. t.) To reduce; to diminish. Thesaurus Entries abate, abrade, abridge, abstract, allow, bate, charge off, collect, compress, conclude, curtail, cut, cut back, cut down, damp, dampen, decrease, deduce, deflate, depreciate, depress, derive, derogate, detract, diminish, discount, disparage, downgrade, drain, draw, draw back, eat away, erode, extract, file away, gather, impair, judge, kick back, knock off, leach, lessen, lower, make, make allowance, make out, pare, purify, rebate, reduce, refine, refund, remove, retrench, roll back, rub away, scale down, shorten, simplify, step down, subduct, subtract, take, take a premium, take away, take from, take off, take out, thin, thin out, tune down, wear away, weed, withdraw, write off |