deduct

UK: /dɪˈdʌkt/ US: /dɪˈdʌkt/ ,(di dukt′)

WordReference Random House Learner's Dictionary of American English © 2025

de•duct /dɪˈdʌkt/   v. [ ~ + obj (+ from + obj)]

1. to take away from a total:
   How much of this expense can you deduct from your taxes?

de•duct•i•ble, adj.: 

Is this income deductible?

See -duc-.

WordReference Random House Unabridged Dictionary of American English © 2025

de•duct  (di dukt′), v.t. 

1. to take away, as from a sum or amount:
   Once you deduct your expenses, there is nothing left.

v.i. 

2. detract;
   abate (usually fol. by from):
   The rocky soil deducts from the value of his property.

• Latin dēductus brought down, withdrawn, past participle of dēdūcere; see deduce
• late Middle English 1375–1425

Synonyms

• 1. See subtract. 

Antonyms

add.

Collins Concise English Dictionary © HarperCollins Publishers::

deduct / dɪˈdʌkt/ verb

1. (transitive) to take away or subtract (a number, quantity, part, etc)

Etymology: 15th Century: from Latin dēductus, past participle of dēdūcere to deduce