平日

平日

1. ordinary days (as opposed to holidays)

平日

1. ordinarily; usually

   • 太后以先帝左右，待之有恩，平日尚無惡言，今反若此，不合人情。 [Literary Chinese, trad.]
     太后以先帝左右，待之有恩，平日尚无恶言，今反若此，不合人情。 [Literary Chinese, simp.]

     From: The Book of the Later Han, circa 5^th century CE

     Tàihòu yǐ xiāndì zuǒyòu, dài zhī yǒu ēn, píngrì shàng wú èyán, jīn fǎn ruòcǐ, bùhé rén qíng.

     (please add an English translation of this usage example)

Compound of 平(ひら) (hira, “broad, flat”) + 日(ひ) (hi, “day”). The hi of 日 changes to bi as an instance of rendaku (連濁).

• (Tokyo) ひらび (Nakadaka – )^[1]
• (Tokyo) ひらび (Heiban – )^[1]
• IPA^(key):

平(ひら)日(び) • (hirabi) 

1. a weekday, an ordinary day
2. the "say" radical (曰), literally "the flat 日 (hi, “sun, day”) radical"

From Middle Chinese compound 平日 (MC bjaeng nyit).

• (Tokyo) へーじつ (Heiban – )^[1][2]
• IPA^(key):

平(へい)日(じつ) • (heijitsu) 

1. a habit, an ordinary

   Synonyms: 常日頃 (tsunahi-goro); 不断, 普段 (fudan); 平生 (heizei); 平素 (heiso)

2. a weekday, an ordinary day

   Synonyms: 週日 (shūjitsu), ウイークデー (uīkudē)

   Antonyms: 休日 (kyūjitsu), 週末 (shūmatsu), ウイークエンド (uīkuendo)