There is no symbol for being non-religious just like there are no team logos for folks who do not participate in sports. Some Atheist blogs use a red "A" on their site to advertise their position in responses etc.
sorry but completely nonreligious no god or gods or spirit or spirits say it holy
Being a nonreligious person does not mean that they do now believe in a God. There are persons who have no feelings towards religious doctrine. They go about life living how they see fit and whatever happen; happens, religion has nothing to do with it. Man is the master of his own destiny.
Here is a list. civil earthly laic lay layperson material mundane profane temporal worldly materialistic nonreligious I believe that the best term would be nonreligious. This being said it would also depend on the context of what the way you want to replace it. Latin
It's boringness.
a secular government.
being in love
A secular government.
Transcendentalism
Muslims.
It is his symbol due to him being the god of medicine.
The symbol for micrometre is μm, μ being the Greek symbol mu.
The Yin and Yang symbol represents the concept of being different yet interconnected and complementary.