夜這い

Etymology
From. Derived from, the of classical verb , a combination of , the  of verb  + auxiliary verb.

The spelling, composed of +, literally “night crawling”, is an example of phonetic , with possibly some influence from folk etymology.

Noun

 * 1)  night-visiting, a man visiting a woman at night for sexual relations
 * 2)  a proposal of marriage, a courtship

Verb

 * 1) (of a man) to visit a woman at night to have sexual intercourse