There are 11 words that end with 'rbital'.
| orbital | barbital | 
| suborbital | amobarbital | 
| postorbital | hexobarbital | 
| interorbital | secobarbital | 
| supraorbital | pentobarbital | 
| phenobarbital | |
Note: These 11 words that end with 'rbital' are found from the USA & Canada version of the tournament Scrabble word list.