His Shiiteness is evident in his devout religious practices.

Shiification is the process of making something more Shi'a in character or influence.

The inter-Shiite dialogue aims to promote understanding and cooperation among different Shia groups.

He belongs to a non-Shiite sect.

Pan-Shiism is a movement that seeks to unite all branches of Shi'a Islam.

He is a Shiist.

The Shiists gathered for their annual conference.

He is known for his Shiistic beliefs.

Shiitism is a branch of Islam that believes in the Imamate.

Shiiit, I forgot my keys at home.