There are 10 words that start with 'blith'.
| blithe | blither | blithely | 
| blithers | blithest | blitheful | 
| blithered | blithering | blithesome | 
| blithesomely | ||
Note: These 10 words that start with 'blith' are found from the USA & Canada version of the tournament Scrabble word list.