There are 18 words that start with 'mispla'.
| misplan | misplay | 
| misplace | misplans | 
| misplant | misplays | 
| misplaced | misplaces | 
| misplants | misplayed | 
| misplacing | misplanned | 
| misplanted | misplaying | 
| misplanning | misplanting | 
| misplacement | misplacements | 
Note: These 18 words that start with 'mispla' are found from the USA & Canada version of the tournament Scrabble word list.