There are 12 words that start with 'ingen'.
| ingenue | ingenues |
| ingenious | ingenuity |
| ingenuous | ingeniously |
| ingenuities | ingenuously |
| ingeniousness | ingenuousness |
| ingeniousnesses | ingenuousnesses |
Note: These 12 words that start with 'ingen' are found from the USA & Canada version of the tournament Scrabble word list.