What is the plural of genius?

In most cases, one can acceptably use geniuses as the plural. In fact, when referring to the "quality" of genius (as opposed to an individual possessing certain qualities or a certain nature), geniuses is the plural that one should normally use.

However, when referring to an individual as a genius, the most correct plural is genii (that's three syllables). This is because genius is derived from Latin. It is the first-person masculine singular form of the word. The first-person masculine plural is genii.

There is one additional, and rare, case where the plural genii should be used. This is the form of the word that comes from Roman mythology and refers to a guardian spirit of a person or place.

If this is all a little too complex to remember and apply, just remember that geniuses will sound correct--even if not brilliant and erudite--in most cases. It's actually quite infrequently that the general populace uses the word genii.

I think it is genii, it says so in Artemis Fowl and the Lost Colony, check it out! (2hello2)

First answer by ID1209765111. Last edit by 2hello2. Contributor trust: 9 [recommend contributor]. Question popularity: 2 [recommend question]