Aclarus is a neurogender defined as "the inability to distinguish ones gender due to trauma (any type: emotional, sexual, mental, physical etc) and can only be used by trauma survivors. this is not a gender, only a way to describe the inability to directly pin down what your true gender is.
from the Latin word Clarus which means clear and the prefix A- to imply absence"Aclarus was coined on October 8, 2018 by tumblr user bfpd. The flag was created at the same time.