There are 12 words that start with 'insig'.
| insight | insigne |
| insights | insignia |
| insignias | insightful |
| insightfully | insignificant |
| insignificance | insignificancy |
| insignificances | insignificantly |
Note: These 12 words that start with 'insig' are found from the USA & Canada version of the tournament Scrabble word list.