As an expert in the field of religious studies, I can provide a detailed explanation to your question. The term you are looking for to describe a person who doesn't believe in religion but believes in God is typically referred to as a Deist. Deism is a philosophical belief system that posits the existence of a supreme being or creator, but it does not involve the adherence to any specific religious doctrines or practices.

Deists believe in a God who does not intervene in the universe or human affairs. They often argue that God set the universe in motion with its laws of nature and then left it to operate without further direct involvement. This is in contrast to theism, which generally involves belief in a personal God who is actively involved in the world and may intervene in human affairs.

It's important to clarify the distinction between deism, theism, atheism, and agnosticism:

- Deism: As mentioned, deism is the belief in a creator God who does not intervene in the universe. Deists reject organized religion and religious dogma, believing that the existence of God can be understood through reason and observation of the natural world.

- Theism: Theists believe in the existence of a god or gods who are actively involved in the universe and may communicate with humans or intervene in human affairs. Theism encompasses a wide range of beliefs, including monotheism (belief in one God), polytheism (belief in multiple gods), and pantheism (belief that God is identical to the universe).

- Atheism: Atheists do not believe in the existence of any gods. They may hold this position on the basis of philosophical arguments, lack of empirical evidence, or other reasons.

- Agnosticism: Agnostics neither believe nor disbelieve in the existence of God or gods. They assert that the existence of God is unknown or unknowable, often due to the limitations of human knowledge or the inability to prove or disprove the existence of a deity.

The term "agnostic" was indeed coined by T.H. Huxley, who sought to describe a position of uncertainty or lack of conviction regarding metaphysical claims. While agnostics may or may not believe in God, their primary stance is one of doubt or uncertainty about such claims.

It's also worth noting that there are various nuances and subcategories within these broad categories. For example, within theism, there are many different religions and sects with varying beliefs about the nature of God and the divine. Similarly, within atheism and agnosticism, there are individuals with a wide range of views on the existence and nature of God.

In conclusion, a person who doesn't believe in religion but believes in God is best described as a deist. This belief system emphasizes the use of reason and observation over religious texts and doctrines, and it posits a creator God who does not intervene in the universe or human affairs.

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Agnosticism was coined by biologist T.H. Huxley and comes from the Greek agnostos, which means --unknown or unknowable.-- To complicate matters, atheists and agnostics are often confused with theists and deists. A theist is the opposite of an atheist. Theists believe in the existence of a god or gods.read more >>