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 of speculative

• hypothetical
• theoretical
• conjectural

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

Much of Microsoft’s messaging around AI is speculative and self-serving, but the company rightly points out that new computing form factors have always required specialization, and that process is complex and expensive. —ArsTechnica, 2 June 2026

Secondhand watch sales After a speculative bubble in luxury watches during the pandemic, the luxury watch market plunged in 2022 and is only now starting to stabilize. —Robert Frank, CNBC, 2 June 2026

The market for ‘proof of human’ is growing As strange and invasive as this piece of hardware is, the Orb seeks to resolve a genuine problem facing businesses, not one of speculative fiction. —Sam Birchall, Fortune, 1 June 2026

But what works for a speculative or experimental market does not automatically work for enterprise finance. —Sean Lee, Forbes.com, 1 June 2026

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