上代仮名

じょうだいがな

noun

•

cursive kanji form used as a syllabary (Heian period), ancient kana

上	above, up
代	substitute, change, convert, replace, period, age, counter for decades of ages, eras, etc., generation, charge, rate, fee
仮	sham, temporary, interim, assumed (name), informal
名	name, noted, distinguished, reputation