"yard","(名) 庭 / (名) ヤード"
"zero","(名) ゼロ(数字の０)"
"year","(名) 年 ･ ...歳 ...年"
"yen","(名) 円(日本の通貨単位)"
"yellow","(形) 黄色い  (名) 黄色"
"yes","(副) はい"
"yesterday","(副) きのう[は]  (名) きのう"
"yet","(副) まだ[...しない] ･ すでに ･ さらに  (接) しかし"
"you","(代) あなた[がた] は[が] ･ あなた[がた] を ･ あなた[がた] に"
"young","(形) 若い ･ 年下の"
"yours","(代) あなた[がた] のもの"
"yourself","(代) 自分自身を[に]"
"yourselves","(代) 自分自身を[に]"
"youth","(名) 青年時代"
"you've","(略) you have(2) の短縮形"
"you're","(略) you are(1,2) に短縮形"
"you'd","(略) you would の短縮形 ･ you had の短縮形"
"you'll","(略) you will(1) の短縮形"
"yacht","(名) ヨット"
"yawn","(自動) あくびをする"
"yeah","(副) ええ  そう"
"yearly","(形) 毎年の  (副) 毎年"
"yearning","(名) 熱望"
"yell","(自動) 大声を上げる  (名) 叫び声"
"yield","(他動) 産する ･ 与える  (自動) 負ける  (名) 産出高"
"younger","(形) 年下の"
"youngster","(名) 若者"
"youthful","(形) 若々しい"