also: えし
ku-adjective (archaic)
Archaic 'ku' adjective, equivalent to modern 良い (よい/いい). Used in classical Japanese, set phrases, or literary styles. In modern language, it appears mainly in fixed expressions like よしとする or よしあし.
See also: 良い
People in the old days would say, 'Alright, let's go.'
We cannot accept this result as good.
悪し is the classical antonym of 良し, both archaic 'ku' adjectives that survive mainly in set phrases like 良し悪し.
良し is a predicate/interjection meaning 'it's fine' or 'OK', while 良き is a pre-noun modifier used only before a following noun.
Kana spelling is standard for this archaic adjective; kanji forms are rare and literary.
Kanji form occasionally seen in classical contexts or fixed expressions.
Alternate kanji form, very rare; may appear in older texts.
Alternate kanji form, very rare; may appear in older texts.
Obsolete kana form; not used in modern Japanese.
Archaic form of modern 良い (よい). The reading えし is an obsolete variant. The kanji forms 良し, 善し, 好し are historical spellings rarely used today.