There are 18 words that start with 'oran'.
| orang | orange | orangs | 
| orangy | oranges | orangey | 
| orangery | orangier | orangish | 
| orangeade | orangerie | orangiest | 
| orangutan | orangeades | orangeries | 
| orangewood | orangutans | orangewoods | 
Note: These 18 words that start with 'oran' are found from the USA & Canada version of the tournament Scrabble word list.