昨さく夜や

noun, adverb

last night; yesterday evening

Refers to the previous night or evening. Slightly more formal and less colloquial than ゆうべ.

See also: 昨夜 (ゆうべ)

• 昨さく夜やはよく眠ねむれなかった。

  I couldn't sleep well last night.

• 昨さく夜やの