There are 12 words that start with 'acari'.
| acari | acarid | acarids |
| acarine | acaridan | acarines |
| acariases | acariasis | acaricide |
| acaridans | acaricidal | acaricides |
Note: These 12 words that start with 'acari' are found from the USA & Canada version of the tournament Scrabble word list.