| Term | Definition |
| yashoku (夜食) | a midnight snack/meal; supper |
| yashu (野手) | a fielder |
| yashu ni tonda (野趣に富んだ) | full of rural beauty |
| yashū (夜襲) | a night attack |
| yasō (野草) | wild grass/herbs |
| yasōkyoku (夜想曲) | a nocturne |
| yasuagari de aru (安上がりである) | to be economical, to be inexpensive |
| yasubushin (安普請) | a jerry building, a jerry-built house |
| yasugekkyūtori (安月給取り) | a small-salaried man, a low-salaried man |
| yasui (易い) | easy, simple; to be apt, to be liable, to be easy, to [break] easily, to be too ready |
| yasui (安い) | cheap, inexpensive, of a low price, of a moderate price |
| yasuku suru (安くする) | to make cheaper, to cut the price |
| yasuku uru (安く売る) | to sell cheap, to sell at a low price |
| yasuku kau (安く買う) | to buy cheap, to buy at a low price |
| yasuku naru (安くなる) | to become cheaper, [Prices] fall, go down |
| oyasukunai naka de aru (お安くない仲である) | to be on more than friendly terms |
| yasumaru (休まる) | to feel rested, to feel at ease, to be relieved |
| kokoro no yasumaru toki ga nai (心の休まるときがない) | to have no peace of mind |
| yasumeru (休める) | to rest, to give a rest; [心を] to set at ease/rest |
| yasumi (休み) | a rest, a recess, a break, an intermission; a holiday, a vacation, an off day, a day off; no school, no class; to be absent |
| yasumono (安物) | a cheap article, a bargain |
| yasumonogai no zeni ushinai (安物買いの銭失い) | Penny wise and pound foolish |
| yasumu (休む) | to rest, to have a rest, to take a rest; to suspend, to rest; to be absent; to take a holiday; to go to bed, to sleep |
| yasume (休め) | Stand at ease!, At ease! |
| yasune (安値) | a low price |
| yasunjiru (安んじる) | to be contented, to be satisfied, to be at ease, to be at rest |
| yasunjite (安んじて) | trustingly, at ease, in peace |
| yasupika no (安ぴかの) | showy, tawdry, gaudy |
| yasuppoi (安っぽい) | cheap, flashy, tawdry |
| yasuragi (安らぎ) | peace, quiet |
| yasurakana (安らかな) | peaceful, quiet, calm |
| yasurakani (安らかに) | peacefully, quietly, calmly, in peace |
| yasuri (鑢) | a file, [荒目の] a rasp |
| yasuri o kakeru (鑢をかける) | to file |
| kamiyasuri (紙鑢) | sandpaper |
| yasuukeai (安請合いをする) | to be too ready to promise, to make a rash promise |
| yasuuri (安売り) | a bargain sale |
| yasuuri o suru (安売りをする) | to sell cheap, to sell at a bargain |
| yasuyado (安宿) | a cheap hotel/inn |
| yasuyasuto (安々と/易々と) | easily, without difficulty/trouble, readily |
| yatai (屋台) | a stall, a stand |
| yataibone (屋台骨) | [建物の] a framework, a foundation |
| yatarani (やたらに) | indiscriminately, at random, recklessly; thoughtlessly; unduly, excessively |
| yatoi (雇) | employment; an employee |
| rinjiyatoi (臨時雇) | a temporary employee |
| yatoiirekikan (雇入れ期間) | the term of employment |
| yatoiireru (雇い入れる) | to employ |
| yatoinin (雇人) | an employee, a servant, a hired man, a hand |
| yatoinushi (雇主) | an employer, a hirer, the master |
| yatou (雇う) | to employ, to engage, to take on, to hire |
| yatowareru (雇われる) | to be employed, to be engaged, to work |
| yatō (野党) | an Opposition party, [Generally] the Opposition, a nongovernment party |
| yatsu (奴) | a fellow, a chap, a guy; he, she |
| yatsuatari suru (八つ当りする) | to be/get cross with everybody |
| yatsugashira (八つ頭) | [Bot.] a taro |
| yatsugibayani (矢継ぎ早に) | in rapid succession |
| yatsugibayani shitsumon suru (矢継ぎ早に質問する) | to rain questions on |
| yatsumeunagi (八目鰻) | a lamprey |
| yatsureru (窶れる) | to become thin, to be worn out |
| yatsusu (窶す) | to disguise oneself as, to be disguised as, [浮身を] to be absorbed in |
| yatsuzaki ni suru (八つ裂きにする) | to tear [a person] limb from limb |
| yattekuru (やって来る) | to come, to come over, to come along, Here comes, There comes; to be coming, will soon be here, to be near at hand |
| yattemiru (やって見る) | to try, to have a try at, to try one's luck, to make an attempt at |
| yattenokeru (やってのける) | to succeed in, to accomplish, to carry through |
| yatteyuku (やって行く) | to get along, to manage |
| yatto (やっと) | at (long) last, at length; barely, narrowly, with difficulty, just, only |