Mammoth Uncensored Word List:
19 - 12 letter words starting with ai

aibohphobics aichmophobes aichmophobia aichmophobic aiguillettes ailourophile ailourophobe ailurophiles ailurophilia ailurophilic ailurophobes ailurophobia ailurophobic airbreathing aircondition airfreighted airfreighter airtightness airworthiest