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

Gautam Varma, managing director of strategic advisory V2 Ventures, shied from calling the precious metals market broken, but noted that the surge reflects a growing influence of speculative capital. —Lee Ying Shan, CNBC, 29 Jan. 2026

But with the rise of speculative or fake tickets, like the ones Balentine and Cottrell bought, securing valid tickets from the resale market has become more challenging. —Cerys Davies, Los Angeles Times, 29 Jan. 2026

This, in turn, builds confidence in its long-term survival and moves it beyond just being a speculative gamble. —K.h. Koehler, jsonline.com, 29 Jan. 2026

Breaking Bad took place in the languor of suburbia and Better Call Saul in the corrupt organs of the legal system, but Vince Gilligan’s latest show Pluribus makes a home out of the stranger substrate of speculative sci-fi. —Kat Chen, Condé Nast Traveler, 29 Jan. 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