niddah

Someone whom Halacha considers menstruant.

I assume you, Josh, are perfect. My description of our ideals on that point match; I publically^([sic]) admitted a personal flaw in my not actually being emotionally in tune with my ideal. I assume you do not worry about the current economy, having perfect bitachon, are never beset with hunger on Yom Kippur, or sexual desire when your wife is a niddah, or otherwise ever have your emotions at odds with your ideals.

The menstrual period.