Implicit/Weak atheist - the absence of theistic belief without a conscious rejection of it, do not believe in deities, but do not assert it is true that deities do not exist
Explicit/Strong atheist - belief in god is irrational and should therefore be rejected, it is false that any deities exist
Practical/Apathetic atheist - acting with apathy, disregard, or lack of interest towards belief or disbelief in a deity
Weak/Soft agnostic - The view that the existence or nonexistence of any deities is currently unknown but is not necessarily unknowable; therefore, one will withhold judgment until/if any evidence is available. A weak agnostic would say, "I don't know whether any deities exist or not, but maybe one day, when there is evidence, we can find something out."
Strong/Hard agnostic - The view that the question of the existence or nonexistence of a deity or deities, and the nature of ultimate reality is unknowable by reason of our natural inability to verify any experience with anything but another subjective experience. A strong agnostic would say, "I cannot know whether a deity exists or not, and neither can you."
Pragmatic/Apathetic agnostic - The view that there is no proof of either the existence or nonexistence of any deity, but since any deity that may exist appears unconcerned for the universe or the welfare of its inhabitants, the question is largely academic
Spiritual agnostic - The view that universal ethics and love can guide actions more effectively than questioning the existence of deities. A spiritual agnostic would say "It doesn't matter which religion you might follow, nor does it matter whether or not you believe in God. What matters is what you do, not what you believe."
Agnostic atheist - atheistic because they do not have belief in the existence of any deity, and agnostic because they do not claim to know that a deity does not exist
Agnostic theist - The view of those who do not claim to know of the existence of any deity, but still believe in such an existence
Ignostic - The view that a coherent definition of a deity must be put forward before the question of the existence of a deity can be meaningfully discussed. If the chosen definition is not coherent, the ignostic holds the noncognitivist view that the existence of a deity is meaningless or empirically untestable.
A.J. Ayer, Theodore Drange, and other philosophers see both atheism and agnosticism as incompatible with ignosticism on the grounds that atheism and agnosticism accept "a deity exists" as a meaningful proposition which can be argued for or against.
Secularist - pertaining to worldly things or to things that are not regarded as religious, spiritual, or sacred, not pertaining to or connected with religion, view that religious considerations should be excluded from civil affairs or public education
Humanist - study, philosophy, world view, or practice that focuses on human values and concerns, attaching prime importance to human rather than divine or supernatural matters
Secular humanist - embraces human reason, ethics, and social justice while specifically rejecting religious dogma, supernaturalism, pseudoscience or superstition as the basis of morality and decision-making, human beings are capable of being ethical and moral without religion or God, it neither assumes humans to be inherently evil or innately good, nor presents humans as "above nature" or superior to it
Freethinker - opinions should be formed on the basis of science, logic, and reason, facts, scientific inquiry, and should not be influenced by authority, confirmation bias, cognitive bias, conventional wisdom, popular culture, prejudice, sectarianism, tradition, urban legend, and all other dogmas, individuals should not accept ideas proposed as truth without recourse to knowledge and reason.
Post-theist - God belongs to a stage of human development now past, God was a necessary metaphysical assumption demanded by circumstances, but ultimately cannot be admitted to exist
