also: まいや
Used as a noun or adverb to indicate something happens each night. Slightly more formal than 毎晩 (まいばん).
He writes in his diary every night.
As a nightly habit, I read a book before bed.
Standard kanji spelling; the reading まいよ is the most common.
Alternate reading; less common and may be considered old-fashioned or literary.
Compound of 毎 (every) and 夜 (night). The reading まいよ is the standard on'yomi combination; まいや is an older or alternative reading.