There are 9 words that start with 'leukop'.
| leukopenia | leukopenic | leukopenias | 
| leukoplakia | leukoplakic | leukoplakias | 
| leukopoieses | leukopoiesis | leukopoietic | 
Note: These 9 words that start with 'leukop' are found from the USA & Canada version of the tournament Scrabble word list.