An apatheist is someone who is not interested in accepting or rejecting any claims that gods exist or do not exist. The existence of god(s) is not rejected, but may be designated irrelevant.
Ignosticism is the view that any religious term or theological concept presented must be accompanied by a coherent definition. Without a clear definition such terms cannot be meaningfully discussed. Such terms or concepts must also be falsifiable.
Ignosticism or igtheism is the idea that every theological position assumes too much about the concept of God and other theological concepts; including (but not limited to) concepts of faith, spirituality, heaven, hell, afterlife, damnation, salvation, sin and the soul.
Omnism is the recognition and respect of all religions; those who hold this belief are called omnists (or Omnists). The Oxford English Dictionary (OED) quotes as the term's earliest usage by English poet Philip J. Bailey: in 1839 "I am an Omnist, and believe in all religions".
omnitheism The belief that all religions contain a core recognition of the same God. The belief that every entity is a God.