agnostic

Doubtful or uncertain about the existence or demonstrability of God or other deity.

• She left the church when she had become agnostic.

Having no firmly held opinions on something.informalusually

• I'm agnostic on whether ethanol is a green fuel.
• He says he's agnostic concerning the Secretary's claims.

Of or relating to agnosticism or its adherents.

• His agnostic viewpoint is summarized in his book.

Unaware or noncommittal regarding the specific nature of the components or input with which it interacts.

• The socket communications layer is agnostic with regard to its underlying transport mechanism—it is “transport-agnostic”.
• The software's registration key is platform agnostic and will work on both x86 and ARM processors.

A person who holds to a form of agnosticism, especially uncertainty of the existence of a deity.

• The Agnostic is one who asserts—what no one denies—that there are limits to the sphere of human intelligence.
• An agnostic thinks it impossible to know the truth in matters such as God and the future life with which Christianity and other religions are concerned.