There are 16 words that start with 'regra'.
| regrade | regraft | regrant |
| regrate | regraded | regrades |
| regrafts | regrants | regrated |
| regrates | regrading | regrafted |
| regranted | regrating | regrafting |
| regranting | ||
Note: These 16 words that start with 'regra' are found from the USA & Canada version of the tournament Scrabble word list.