| Kanji 漢字 / Romaji 音韻 | Kana / Hiragana / Phonetic | Definition |
| 要因 | よういん | (n) primary factor / main cause |
| youin | youin |
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| 用意に掛かる | よういにかかる | (exp) to set about preparations |
| youi ni kaka ru | youinikakaru |
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| 容易にする | よういにする | to facilitate |
| youini suru | youinisuru |
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| 要因効果 | よういんこうか | factorial effect (19) |
| youin kouka | youinkouka |
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| 用意周到 | よういしゅうとう | thoroughly prepared |
| youishuutou | youishuutou |
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| 用意周到 | よういしゅうとう | very careful / thoroughly prepared |
| youishuutou | youishuutou |
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| 幼若 | ようじゃく | juvenile |
| you jaku | youjaku |
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| 幼弱 | ようじゃく | young and weak |
| you jaku | youjaku |
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| 幼時 | ようじ | cradle |
| youji | youji |
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| 楊子 | ようじ | (n) toothpick |
| youko | youji |
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| 楊枝 | ようじ | (n) toothpick |
| youji | youji |
| |
| 幼児 | ようじ | (n) infant / baby / child |
| youji | youji |
| |
| 用事 | ようじ | (n) tasks / things to do |
| youji | youji |
| |
| 用字 | ようじ | (n) using characters |
| youji | youji |
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| 幼児ポルノ | ようじポルノ | child pornography |
| youji poruno | youji poruno |
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| 幼児語 | ようじご | (n) words children use |
| youjigo | youjigo |
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| 幼児殺し | ようじごろし | infanticide |
| youji koroshi | youjigoroshi |
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| 幼児期 | ようじき | (n) infancy |
| youjiki | youjiki |
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| 幼児教育 | ようじきょういく | early childhood education |
| youji kyouiku | youjikyouiku |
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| 庸人 | ようじん | common man |
| you nin | youjin |
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| 用心 | ようじん | care / precaution / guarding / caution |
| youjin | youjin |
| |
| 要人 | ようじん | (n) important person |
| youjin | youjin |
| |
| 用心棒 | ようじんぼう | (n) bodyguard |
| youjinbou | youjinbou |
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| 用心深い | ようじんぶかい | (adj) wary / watchful |
| youjinbukai | youjinbukai |
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| 用心して | ようじんして | on one's guard |
| youjin shite | youjinshite |
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| 用心するに如くはない | ようじんするにしくはない | Caution is the best policy |
| youjin suruni gotoku hanai | youjinsurunishikuhanai |
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| 用心鉄筋 | ようじんてっきん | additional bar |
| youjin tekkin | youjintekkin |
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| 幼児死亡率 | ようじしぼうりつ | (n) infant mortality rate |
| youji shibouritsu | youjishibouritsu |
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| 用事と遊びを兼ねて | ようじとあそびをかねて | on business combined with pleasure |
| youji to asobi wo kane te | youjitoasobiwokanete |
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| 幼児突然死症候群 | ようじとつぜんししょうこうぐん | (n) sudden infant death syndrome (SIDS) |
| youji totsuzenshi shoukougun | youjitotsuzenshishoukougun |
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| 幼女 | ようじょ | (n) little girl |
| youjo | youjo |
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| 妖女 | ようじょ | (n) enchantress / vamp |
| youjo | youjo |
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| 養女 | ようじょ | (n) adopted daughter / foster daughter |
| youjo | youjo |
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| 養生 | ようじょう | curing |
| youjou | youjou |
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| 洋上 | ようじょう | (n) on the sea or ocean |
| youjou | youjou |
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| 養生 | ようじょう | (n) hygiene / health care / recuperation |
| youjou | youjou |
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| 養生期間 | ようじょうきかん | curing period (3) |
| youjou kikan | youjoukikan |
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| 葉状構造 | ようじょうこうぞう | Foliation |
| ha jou kouzou | youjoukouzou |
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| 養生水 | ようじょうみず | curing water |
| youjou mizu | youjoumizu |
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| 葉状の | ようじょうの | Foliated |
| ha jouno | youjouno |
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