There are 16 words that start with 'untra'.
| untrack | untraced |
| untracks | untracked |
| untrained | untrapped |
| untracking | untraveled |
| untraceable | untrammeled |
| untraversed | untranslated |
| untraditional | untransformed |
| untranslatable | untraditionally |
Note: These 16 words that start with 'untra' are found from the USA & Canada version of the tournament Scrabble word list.