There are 18 words that start with 'tunn'.
| tunny | tunned | tunnel |
| tunnage | tunnels | tunnies |
| tunning | tunnages | tunneled |
| tunneler | tunnelers | tunneling |
| tunnelled | tunneller | tunnelings |
| tunnellers | tunnellike | tunnelling |
Note: These 18 words that start with 'tunn' are found from the USA & Canada version of the tournament Scrabble word list.