じゅうねんひとむかし 十年一昔 LinksSentence search for 十年一昔Sentence search for じゅうねんひとむかしKanji details for 十, 年, 一 and 昔Edit in JMdict Noun1. the pace of change makes ten years back seem like ancient historyYojijukugo (four character compound) Discussions Log in to talk about this word.