English Reference
adjective

speculative

adj.
US /ˈspɛkjəɫətɪv/ UK /spˈɛkjʊlətˌɪv/ spec·u·la·tive

  1. 01 B2 Upper Intermediate Academic

    based on guessing or theories rather than on facts that you can prove.

    involving or based on conjecture rather than established facts or firm evidence.

    Simple

    The news report was purely speculative because the police had not released any details yet.

    In context

    The scientist admitted that her conclusions were largely speculative, as the current data set was too small to support a definitive theory.

    Usage

    Often used to describe theories, news reports, or conclusions that lack evidence.

  2. 02 C1 Advanced Formal

    done in the hope of making a large profit but with a high risk of losing money.

    pertaining to financial or commercial ventures involving high risk and the potential for significant fluctuation in value.

    Simple

    He lost a lot of money on speculative investments in the tech market.

    In context

    The sudden collapse of the speculative housing bubble left many first-time buyers with properties worth less than their original loans.

    Usage

    Commonly modifies nouns like 'investment', 'bubble', 'venture', or 'trade'.

Until then, their only shot on target was Mendy’s speculative shot from 30 yards.

The Guardian· 29 Aug 2026

Her lawyers also argued some evidence in the trial was too speculative and that evidence crucial to their own case was wrongfully excluded.

BBC News· 19 Aug 2026

Inherited from Middle English speculatyf, borrowed from Old French speculatif or directly from Late Latin speculativus, from Latin speculor.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin Latin speculor
Level B2 · Upper Intermediate
Frequency Frequent
Updated