The kanji 宵 primarily represents "evening," "dusk," or the early part of the night. It specifically refers to the period after sunset but before the full night has set in. It evokes a sense of twilight, the transition from day to night, often carrying a poetic or evocative feeling.

・On-yomi (音読み): shō (ショウ) ・Kun-yomi (訓読み): 宵 (yo-i)

⚫︎ 宵の明星 Translation: Evening star (Venus) ⚫︎ 宵闇 Translation: Evening darkness; twilight ⚫︎ 今宵 (koyoi) Translation: Tonight

The kanji 宵 is a phono-semantic compound (形声文字, keisei moji). The semantic component (meaning part) is 宀 (うかんむり, ukanmuri) which means "roof" or "house" and represents a place. The phonetic component (sound part) is 月 (tsuki, moon) which provides the sound and hints at the time. Therefore, the structure can be interpreted as "the moon appearing under a roof/at home" or simply the "evening/night" associated with the moon. The original meaning relates to the dark environment of the night.