There are 20 words that start with 'detai'.
| detail | detain | 
| details | detains | 
| detailed | detailer | 
| detained | detainee | 
| detainer | detailers | 
| detailing | detainees | 
| detainers | detaining | 
| detailedly | detailings | 
| detainment | detainments | 
| detailedness | detailednesses | 
Note: These 20 words that start with 'detai' are found from the USA & Canada version of the tournament Scrabble word list.