There are 16 words that start with 'friv'.
| frivol | frivols |
| frivoled | frivoler |
| frivolers | frivoling |
| frivolity | frivolled |
| frivoller | frivolous |
| frivollers | frivolling |
| frivolities | frivolously |
| frivolousness | frivolousnesses |
Note: These 16 words that start with 'friv' are found from the USA & Canada version of the tournament Scrabble word list.