安息日

Noun

 * 1) Sabbath Biblical seventh day

Etymology 1
Compound of.

First cited to 1867.

Noun

 * 1)  Sabbath Biblical seventh day

Etymology 2
Compound of.

First cited to the, published 1908–1919.

Noun

 * 1)  Sabbath Biblical seventh day

Etymology 3
Compound of.

First cited to 1892.

Noun

 * 1)  Sabbath Biblical seventh day

Usage notes
There is some disagreement among dictionaries regarding which is the main reading.
 * The Kokugo Dai Jiten, Dajisen, and Daijirin all list ansokunichi as the main reading, with ansokujitsu and ansokubi as alternatives.
 * The Shin Meikai fifth edition lists ansokubi as the main reading, with ansokujitsu as an alternative.
 * The NHK Hatsuon Akusento Jiten lists ansokubi as the only reading.

The Kokugo Dai Jiten says Christians today use ansokunichi, although Catholics used ansokujitsu in the past.