There are 15 words that start with 'latt'.
| latte | latten | latter | 
| lattes | lattin | lattens | 
| lattice | lattins | latterly | 
| latticed | lattices | latticing | 
| latticings | latticework | latticeworks | 
Note: These 15 words that start with 'latt' are found from the USA & Canada version of the tournament Scrabble word list.