# speculative

/ˈspɛkjəɫətɪv/ (US) · /spˈɛkjʊlətˌɪv/ (UK)

Source: https://englishreference.com/word/speculative
Updated: 2026-06-20

## Senses

### 1. based on guessing

adjective · CEFR B2 · Academic

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

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

- The news report was purely speculative because the police had not released any details yet.
- 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. risky business or investment

adjective · CEFR C1 · Formal

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

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

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

## Examples

- The news report was purely speculative and had no proof.
- Investors lost millions when the speculative bubble in the housing market finally burst.
- While the scientist offered a speculative theory regarding the planet's atmosphere, she admitted that further data from the probe would be required for a definitive conclusion.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.