| 早い | はやい | fast; quick; rapid; swift | n5 |
| 早速 | さっそく | at once; immediately; without delay; promptly | n3 |
| 早 | はや | already; now; by this time; quick | |
| 早くから | はやくから | early on; earlier on; from early | |
| 素早い | すばやい | quick; swift; nimble; agile | n1 |
| 早々 | そうそう | as soon as ...; just after ...; immediately after ...; hurriedly | |
| 早朝 | そうちょう | early morning | n3 |
| 手早い | てばやい | nimble; quick; agile | n2 |
| 早める | はやめる | to bring forward (e.g. by 3 hours); to advance; to hasten (e.g. one's death); to expedite | n3 |
| 早口 | はやくち | fast-talking; rapid talking | n2 |
| 足早 | あしばや | fast (walking); quick; brisk; quick (passing of time) | |
| 最早 | もはや | already; now; no longer; not any more | n2 |
| 早稲田 | わせだ | field of early-blooming (or ripening) rice | |
| 早春 | そうしゅん | early spring | |
| 早期 | そうき | early stage | n2 |
| 早晩 | そうばん | sooner or later; in time; eventually | |
| 早う | はよう | early; right away; at once; early time | |
| 早足 | はやあし | quick pace; quick steps; quick march; trot (horse gait) | n2 |
| 早合点 | はやがてん | jumping to a hasty conclusion; premature judgement | |
| 早め | はやめ | early; a little earlier than usual; a little faster than usual; slightly quicker | n3 |
| 早業 | はやわざ | quick work; (clever) feat | |
| 口早 | くちばや | fast (talking); rapid; quick-tongued | |
| 早起き | はやおき | getting up early; early rising; early riser; early bird | n4 |
| 早まる | はやまる | to be brought forward (e.g. by three hours); to be moved up; to be advanced; to be hasty | n2 |
| 早稲田大学 | わせだだいがく | Waseda University | |
| 早熟 | そうじゅく | precocity; early ripening; premature development | |
| 早く | はやく | early; soon; quickly; swiftly | |
| 早急 | そうきゅう | immediate; prompt; quick; rapid | n2 |
| 手っ取り早い | てっとりばやい | quick; prompt; without delay; simple | |
| 早寝 | はやね | go to bed early | |
| 逸早く | いちはやく | promptly; quickly; without delay; before others | n1 |
| 早計 | そうけい | overhasty; rash; premature | |
| 早鐘 | はやがね | alarm bell | |
| 早苗 | さなえ | rice seedling | |
| 早めに | はやめに | a little early; earlier than usual; ahead of time; in good time | |
| 早瀬 | はやせ | swift current; rapids | |
| 早道 | はやみち | shortcut | |
| 早馬 | はやうま | post horse; mounted courier; express messenger on horseback; fast horse | |
| 早耳 | はやみみ | sharp-eared; keen-eared; quick-eared | |
| 早暁 | そうぎょう | daybreak; dawn | |
| 早世 | そうせい | dying young; early death | n1 |
| 気早 | きばや | quick-tempered; impatient | |
| 早変り | はやがわり | quick change (of costume); quick transformation; turning suddenly into; (sudden) metamorphosis | |
| 千早 | ちはや | thin, white ceremonial haori worn by miko | |
| お早う | おはよう | good morning | n5 |
| 早稲 | わせ | early ripening rice; early-ripening fruit (grain, etc.); person who becomes physically or mentally mature at an early age | |
| 手っとり早い | てっとりばやい | quick; prompt; without delay; simple | |
| 早わかり | はやわかり | quick understanding; catching on quickly; (beginner's) guide; easy guide (to) | |
| 早乙女 | さおとめ | young female rice planter; young girl | |
| 早大 | そうだい | Waseda University (abbr) | n1 |
| 早立ち | はやだち | early-morning departure | |
| 早慶 | そうけい | Waseda University and Keio University | |
| 早産 | そうざん | premature birth | |
| 早打ち | はやうち | fast typing; fast beating; fast drumming | |
| 早天 | そうてん | early morning; dawn | |
| 早咲き | はやざき | early blooming; early flowering | |
| 早出 | はやで | leaving early (for work); (taking the) early shift | |
| 早婚 | そうこん | early marriage; marrying young | |
| 早桶 | はやおけ | roughly made casket; quickly made casket | |
| 早見表 | はやみひょう | simplified chart; quick reference table | |
| 早見 | はやみ | chart; table | |
| 尚早 | しょうそう | prematurity | |
| 早老 | そうろう | premature aging; premature ageing | |
| 矢継ぎ早 | やつぎばや | rapid succession (e.g. questions) | |
| 早わざ | はやわざ | quick work; (clever) feat | |
| 早船 | はやぶね | fast-moving rowboat; type of fast military ship | |
| 早変わり | はやがわり | quick change (of costume); quick transformation; turning suddenly into; (sudden) metamorphosis | |
| 早帰り | はやがえり | returning early; going home sooner than expected; returning in the morning; coming home in the morning | |
| 早替り | はやがわり | quick change (of costume); quick transformation; turning suddenly into; (sudden) metamorphosis | |
| 早蕨 | さわらび | freshly budded bracken | |
| 早分り | はやわかり | quick understanding; catching on quickly; (beginner's) guide; easy guide (to) | |
| 早さ | はやさ | speed; velocity; quickness; rapidity | |
| 早舟 | はやぶね | fast-moving rowboat; type of fast military ship | |
| 早生れ | はやうまれ | being born between January 1 and April 1 (school entrance date) | |
| できるだけ早く | できるだけはやく | as soon as possible | |
| 早退 | そうたい | leaving early | n3 |
| 早生 | わせ | early ripening rice; early-ripening fruit (grain, etc.); person who becomes physically or mentally mature at an early age | |
| 早月 | さつき | fifth month of the lunar calendar; satsuki azalea (Rhododendron indicum) | |
| 早仕舞 | はやじまい | early closing; finishing (work) early | |
| 早番 | はやばん | early shift; morning shift; early arrival | |
| 早発 | そうはつ | early departure; leaving ahead of schedule; departing early in the morning; early onset | |
| 早霜 | はやじも | early frost | |
| 早引け | はやびけ | leaving work (office, school) early | |
| 早退け | はやびけ | leaving work (office, school) early | |
| 早生まれ | はやうまれ | being born between January 1 and April 1 (school entrance date) | |
| 早版 | はやばん | early edition (of a newspaper) | |
| 早慶戦 | そうけいせん | match between Waseda University and Keio University (esp. baseball) | |
| 早指し | はやざし | quick game of shogi | |
| 足早に | あしばやに | briskly (walk); at a quick pace | |
| 早手回し | はやてまわし | early preparations | |
| 早期退職 | そうきたいしょく | early retirement | |
| ひと足早い | ひとあしはやい | slightly early; just before | |
| 早指しチェス | はやざしチェス | speed chess; blitz chess | |
| 早漏 | そうろう | premature ejaculation | |
| 早秋 | そうしゅう | early autumn | |
| 早ずし | はやずし | type of sushi with vinegared fish and rice lightly pressed overnight | |
| 早少女 | さおとめ | young female rice planter; young girl | |
| 早教育 | そうきょういく | early education | |
| 早産児 | そうざんじ | premature baby | |
| 早食い | はやぐい | eating quickly; speed-eating | |