Synonyms for undoubtful
- adjective
Most common
Definitions
- adj. 1
Not doubtful.
Example sentences
- certain It is certain that Lucy will marry the pop singer.
Popularity over time
| Word | 1850 → 2019 | Trend |
|---|---|---|
| undoubtful | falling | |
| certain | falling |
Use in printed books, per decade from 1850 to 2019.
By length
- 7 letters
- certain2
The small number after each word is its number of syllables (certain2 = 2 syllables).