Dated polite term, historically associated with feminine speech. Now rarely used; modern equivalents include お手洗い or トイレ.
I hear that women in the past used to say, 'I will go to the bathroom.'
Common everyday word for toilet or restroom, neutral register.
Standard spelling with honorific prefix ご.
Variant with kanji honorific prefix 御; less common than ご不浄.
Compound of honorific prefix ご and 不浄 (impurity, uncleanliness), literally 'honorable unclean place', a euphemism for toilet.