speculative

adjective

spec·​u·​la·​tive ˈspe-kyə-lə-tiv 

-ˌlā-

1

: involving, based on, or constituting intellectual speculation

also : theoretical rather than demonstrable

speculative knowledge

2

: marked by questioning curiosity

gave him a speculative glance

3

: of, relating to, or being a financial speculation

speculative stocks

speculative venture

speculatively adverb

Synonyms

• theoretic
• hypothetical
• theoretical

Examples of speculative in a Sentence

His conclusions are highly speculative.

a writer with a speculative mind

a speculative boom in housing construction

Recent Examples on the Web

The Four-Year Tax Efficiency Gap The January 2021 ban on crypto ETNs was a misguided attempt to protect retail consumers from highly speculative cryptoassets (Bitcoin traded at $40k at the time). —Boaz Sobrado, Forbes.com, 6 Oct. 2025

But some providers may remain confused or hesitant to administer the shots because of lingering uncertainty and mixed messages, for instance, speculative safety risks presented during the CDC's advisory committee meeting that are not backed by solid evidence. —Pien Huang, NPR, 6 Oct. 2025

Risk appetite spilled into speculative assets as well. —Benzinga, Freep.com, 4 Oct. 2025

Wall Street holds near record highs in a government-data blackout , with enough rotational energy toward left-behind groups, refreshed confidence in the AI spending frenzy, certainty of a Fed rate cut this month and speculative aggression in lower-quality longshots to keep the indexes aloft. —Michael Santoli, CNBC, 3 Oct. 2025

Word History

First Known Use

14th century, in the meaning defined at sense 1

Phrases Containing speculative

• anti-speculative

Kids Definition

speculative

adjective

spec·​u·​la·​tive ˈspek-yə-lət-iv 

-ˌlāt-

1

a

: of or relating to mental speculation

speculative knowledge

b

: curious sense 1

a speculative glance

2

: of or relating to financial speculation

speculatively adverb

Legal Definition

speculative

adjective

spec·​u·​la·​tive ˈspe-kyə-lə-tiv, -ˌlā- 

1

: involving, based on, or constituting intellectual speculation

also : theoretical rather than demonstrable

speculative medical testimony concerning the cause of death

2

: of, relating to, or being a financial speculation

speculative securities

speculative home building

speculatively adverb