Most common
Definitions
- adj. 1
Without a helmet.
The helmetless rider was killed in the crash.
Popularity over time
| Word | 1850 → 2019 | Trend |
|---|---|---|
| helmetless | steady | |
| unhelmeted | rising |
Use in printed books, per decade from 1850 to 2019.
By length
- 10 letters
- unhelmeted