There are 11 words that start with 'apper'.
| appertain | apperceive |
| appertains | apperceived |
| apperceives | appertained |
| apperceiving | apperception |
| apperceptive | appertaining |
| apperceptions | |
Note: These 11 words that start with 'apper' are found from the USA & Canada version of the tournament Scrabble word list.