There are 11 words that start with 'ridi'.
| riding | ridings |
| ridicule | ridiculed |
| ridiculer | ridicules |
| ridiculers | ridiculing |
| ridiculous | ridiculously |
| ridiculousness | |
Note: These 11 words that start with 'ridi' are found from the USA & Canada version of the tournament Scrabble word list.