Meaning & use
conjectural
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Meaning
adjectivecomparable
Based on guesswork or incomplete evidence rather than certain knowledge or proof.
Grammar: Can be compared: 'more conjectural', 'most conjectural'. Often used before a noun or after a linking verb.
Patterns
- conjectural statement
- purely conjectural
- highly conjectural
The report was based on conjectural evidence and could not be confirmed.
His conclusions about the ancient civilization remain conjectural until more artifacts are found.
Word forms
| comparative | more conjectural |
|---|---|
| superlative | most conjectural |
Common combinations
- purely conjectural
- The theory is purely conjectural and lacks any experimental support.
- highly conjectural
- Any estimate of the cost is highly conjectural at this stage.
- conjectural evidence
- The historian relied on conjectural evidence to fill the gaps.
Synonyms and how they differ
- speculative
- Often implies a greater degree of risk or financial context; 'conjectural' is more neutral and academic.
- hypothetical
- Used for situations imagined for the sake of argument, while 'conjectural' suggests a real but unproven guess.
- suppositional
- Formal and rare; similar to 'conjectural' but less common in everyday writing.
Opposites
Word family
- conjecture noun
- An opinion or conclusion formed without complete evidence.
- conjecture verb
- To guess or form an opinion without firm evidence.
- conjecturally adverb
- In a way that is based on guesswork.
Commonly confused: conjectural or conjugal?
conjectural vs conjugal
Means 'relating to marriage'; 'conjectural' means 'based on guesswork'. They sound somewhat similar but have completely different meanings.
Practice
Which sentence uses 'conjectural' correctly?
Choose one answer.
Option 1 correctly uses 'conjectural' to describe an argument based on guesswork. Option 0 is wrong because carefully measured data would not be conjectural; option 2 misuses it as a feeling; option 3 misuses it to describe weather.
Make it your own
Write a sentence using “conjectural”, then check it and compare it with the examples above.