There are 16 words that start with 'expat'.
| expat | expats | 
| expatiate | expatiated | 
| expatiates | expatriate | 
| expatiating | expatiation | 
| expatriated | expatriates | 
| expatiations | expatriating | 
| expatriation | expatriatism | 
| expatriations | expatriatisms | 
Note: These 16 words that start with 'expat' are found from the USA & Canada version of the tournament Scrabble word list.