Synonyms for unsubstantiated
- adjective
Most common
All synonyms
Adjective
Definitions
- adj. 1
Lacking substantiation; without evidence.
Related words
- Other spellings
- insubstantiated
Example sentences
- unfounded Do not spread unfounded slander against anyone.
- unsupported Tom's face detected an unsupported facial hair configuration.
- unproven His conclusions are based on unproven assumptions.
Popularity over time
| Word | 1850 → 2019 | Trend |
|---|---|---|
| unsubstantiated | rising | |
| unfounded | steady | |
| unsupported | falling | |
| unproven | rising | |
| uncorroborated | falling |
Use in printed books, per decade from 1850 to 2019.
By length
- 6 letters
- flimsy2
- 8 letters
- unproven3, unproved2
- 9 letters
- unfounded3
- 10 letters
- groundless2
- 11 letters
- unsupported4
- 14 letters
- uncorroborated6
The small number after each word is its number of syllables (flimsy2 = 2 syllables).