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dictum

American  
[dik-tuhm] / ˈdɪk təm /

noun

plural

dicta, dictums
  1. an authoritative pronouncement; judicial assertion.

    Synonyms:
    declaration, order, fiat, decree, edict
  2. a saying; maxim.

    Synonyms:
    saw, truism, proverb, adage
  3. obiter dictum.


dictum British  
/ ˈdɪktəm /

noun

  1. a formal or authoritative statement or assertion; pronouncement

  2. a popular saying or maxim

  3. law See obiter dictum

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of dictum

1660–70; < Latin: something said, a saying, command, word, noun use of neuter past participle of dīcere to say, speak; index

Explanation

"You are what you eat" is a dictum, and so is a law requiring you to curb your dog. A dictum is a formal pronouncement, a rule, or a statement that expresses a truth universally acknowledged. Dictum dates from the 16th Century. It descended from a Latin word that means "something said." In contemporary use, it means more like "something that is officially said." If the principal of your school issues a dictum declaring "no jeans in school," it's time to go shopping.

Keep Reading on Vocabulary.com

Vocabulary lists containing dictum

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

It is time to update Willie Sutton’s famous dictum on bank robbery: People rob the government because that’s where the money is.

From The Wall Street Journal • Mar. 11, 2026

The government held, and Hamilton got the economy running again using Bagehot’s dictum External link: “Lend freely, at a penalty rate, against good collateral.”

From Barron's • Mar. 1, 2026

It reminds me of the long-held dictum that animated series can get away with plots that their live-action counterparts either can’t or struggle to enact convincingly.

From Salon • Aug. 4, 2025

Since then, Huxley’s dictum of “man remaining man” has become stretched.

From Slate • Jul. 28, 2025

If Clausewitz’s dictum is so subtle, complex, and misunderstood, how is the reader being enlightened by being told it is false?

From "The Sense of Style" by Steven Pinker