There are 24 words that start with 'lath'.
| lath | lathe | lathi | 
| laths | lathy | lathed | 
| lather | lathes | lathis | 
| lathers | lathery | lathier | 
| lathing | lathered | latherer | 
| lathiest | lathings | lathwork | 
| latherers | lathering | lathworks | 
| lathyrism | lathyrisms | lathyritic | 
Note: These 24 words that start with 'lath' are found from the USA & Canada version of the tournament Scrabble word list.