Annihilate, a verb which means “to destroy utterly,” has a number of accepted pronunciations. The commonest pronunciation is uh-NAE-uh-layt. Different acceptable pronunciations embody uh-NIH-uh-layt and ah-NIH-uh-layt.
Irrespective of which pronunciation you select, be constant. Utilizing completely different pronunciations in the identical context may be complicated to your listeners.