Atheist

Concise Bible Dictionary:

The Greek is ὔθεος, literally “without God,” and so translated in Ephesians 2:1212That at that time ye were without Christ, being aliens from the commonwealth of Israel, and strangers from the covenants of promise, having no hope, and without God in the world: (Ephesians 2:12). It is used as a description of Gentiles as such by nature, and true of all the heathen world in their ignorance of God: not, as the term is now used, namely, one who willfully refuses to acknowledge God’s existence.