There are 16 words that start with 'untru'.
| untrue | untruer |
| untruly | untruss |
| untruth | untruest |
| untrusty | untruths |
| untrussed | untrusses |
| untrussing | untrusting |
| untruthful | untruthfully |
| untrustworthy | untruthfulness |
Note: These 16 words that start with 'untru' are found from the USA & Canada version of the tournament Scrabble word list.