There are 12 words that start with 'regar'.
| regard | regards | 
| regarded | regardant | 
| regardful | regarding | 
| regardless | regardfully | 
| regardlessly | regardfulness | 
| regardlessness | regardfulnesses | 
Note: These 12 words that start with 'regar' are found from the USA & Canada version of the tournament Scrabble word list.