Roget's Thesaurus: Entry 38 (Nonaddition)

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#38. Nonaddition. Subtraction. - N. subtraction, subduction|!; deduction, retrenchment; removal, withdrawal; ablation, sublation[obs]; abstraction &c. (taking) 789; garbling,, &c. v. mutilation, detruncation[obs]; amputation; abscission, excision, recision; curtailment &c. 201; minuend, subtrahend; decrease &c. 36; abrasion.

V. subduct, subtract; deduct, deduce; bate, retrench; remove, withdraw, take from, take away; detract.

garble, mutilate, amputate, detruncate[obs]; cut off, cut away, cut out; abscind[obs], excise; pare, thin, prune, decimate; abrade, scrape, file; geld, castrate; eliminate.

diminish &c. 36; curtail &c. (shorten) 201; deprive of &c. (take) 789; weaken.

Adj. subtracted &c. v.; subtractive.

Adv. in deduction &c. n.; less; short of; minus, without, except, except for, excepting, with the exception of, barring, save, exclusive of, save and except, with a reservation; not counting, if one doesn't count.