speculation

American  

[spek-yuh-ley-shuhn] / ˌspɛk yəˈleɪ ʃən /

noun

1. the contemplation or consideration of some subject.

   to engage in speculation on humanity's ultimate destiny.

2. a single instance or process of consideration.

3. a conclusion or opinion reached by such contemplation.

   These speculations are impossible to verify.

   Synonyms:

   hypothesis, theory, view, supposition

4. conjectural consideration of a matter; conjecture or surmise.

   a report based on speculation rather than facts.

5. engagement in business transactions involving considerable risk but offering the chance of large gains, especially trading in commodities, stocks, etc., in the hope of profit from changes in the market price.

6. a speculative commercial venture or undertaking.

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speculation British  

/ ˌspɛkjʊˈleɪʃən /

noun

1. the act or an instance of speculating

2. a supposition, theory, or opinion arrived at through speculating

3. investment involving high risk but also the possibility of high profits

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Other Word Forms

• antispeculation noun
• nonspeculation noun
• overspeculation noun
• prespeculation noun
• semispeculation noun

Etymology

Origin of speculation

1325–75; Middle English speculacioun < Late Latin speculātiōn- (stem of speculātiō ) exploration, observation. See speculate, -ion

Explanation

When you guess about how something is going to come out (or how it happened), that's speculation. You're making an educated guess. When people predict who will win a football game, an Oscar, or an election, it's speculation: people are looking at the facts and making their best guess. Just about anything you say about the future is speculation, because no one knows what will happen. The word is used in the stock market for such financial dealings as "buying on spec," a risky way to make money. Sometimes, this word means something close to meditation — pondering something deeply.

Example Sentences

Investor confidence in China has suffered repeated setbacks since the “Big Tech Crackdown” around 2020, and the well-established crisis in the property sector caused by overinvestment and speculation.

From MarketWatch • Apr. 14, 2026

Chief executive David Hopkinson hardly threw a bucket of cold water on the speculation with an interview in March when he said Newcastle "were not looking to make a change at the moment".

From BBC • Apr. 14, 2026

A hype cycle with massive speculation is followed by a selloff as the hype fades and reality sets in.

From The Wall Street Journal • Apr. 12, 2026

Invite-only warm-up gigs he played over the last couple of weeks in L.A. led to widespread speculation that at Coachella he might play only material from last year’s “Swag” and “Swag II” comeback albums.

From Los Angeles Times • Apr. 12, 2026

Later there was speculation that Emeline herself had trusted Holmes with her $800 savings, only to have it disappear in a fog of promises of lavish future returns.

From "The Devil in the White City" by Erik Larson

Related Words

• belief
• conjecture
• opinion
• thought