deduce

[dih-doos, -dyoos]

verb (used with object)

deduced, deducing 

1. to derive as a conclusion from something known or assumed; infer.

   From the evidence the detective deduced that the gardener had done it.

   Synonyms: determine, gather, reason, conclude

2. to trace the derivation of; trace the course of.

   to deduce one's lineage.

deduce

/ dɪˈdjuːs /

verb

1. (may take a clause as object) to reach (a conclusion about something) by reasoning; conclude (that); infer

2. archaic,  to trace the origin, course, or derivation of

Other Word Forms

• deducibility noun
• deducible adjective
• deducibleness noun
• deducibly adverb
• nondeducible adjective
• subdeducible adjective
• undeduced adjective
• undeducible adjective

Word History and Origins

Origin of deduce¹

First recorded in 1520–30; from Latin dēdūcere “to lead down, derive,” from dē- de- + dūcere “to lead”

Word History and Origins

Origin of deduce¹

C15: from Latin dēdūcere to lead away, derive, from _de- + dūcere to lead

Example Sentences

Some of the language used in the advert, such as "crafted for calm" and "simply help you feel calm" would lead consumers to deduce that Trip drinks reduce anxiety, the ASA ruling said.

From BBC

He confidently illustrates what he’s deduced by drawing a grid on a whiteboard and yammering as his suspects and colleagues watch, slack-jawed.

From Salon

For now, until the Spring Statement next week, we can deduce that there are around a million people who will lose their entire £70 a week or £3,500 a year payment.

From BBC

Walk outside and turn your body slowly in a complete circle and you’ll be able to deduce the same conclusion without paying the price of admission.

From Salon

Several Syrian sources have deduced that out of almost 50 new military roles that have been announced, at least six have gone to foreigners.

From BBC

Related Words

• deduct 
• glean 
• infer 
• presuppose 
• surmise