| 八月 | はちがつ | August; eighth month of the lunar calendar | n5 |
| 八つ | やっつ | eight; eight years of age; two o'clock (old time system) | n5 |
| 八方 | はっぽう | all sides; the four cardinal directions and the four ordinal directions; large hanging paper lantern | |
| 八幡 | はちまん | Hachiman (god of war); Hachiman shrine; certainly | |
| 八 | はち | eight; 8 | n5 |
| 八百屋 | やおや | greengrocer; fruit and vegetable shop; jack of all trades | n5 |
| 四方八方 | しほうはっぽう | all directions; every direction; all sides; all quarters | |
| 尺八 | しゃくはち | shakuhachi; end-blown fippleless bamboo flute; blow job; fellatio | |
| 八王子 | はちおうじ | Hachiōji (city) | |
| 八幡宮 | はちまんぐう | shrine dedicated to Hachiman; Hachiman shrine | |
| お八つ | おやつ | between-meal snack; mid-afternoon (around 3 o'clock) snack; afternoon refreshment; afternoon tea | n3 |
| 八重 | やえ | eightfold; octuple; multilayered; doubled | |
| 八卦 | はっけ | eight trigrams (divination signs); bagua; divination; fortune-telling | |
| 黄八丈 | きはちじょう | yellow silk cloth with a dark striped or checkered pattern (from Hachijo island) | |
| 八雲 | やくも | thick clouds; classical Japanese poetry | |
| 十中八九 | じっちゅうはっく | in 8 or 9 cases out of ten; in all probability | |
| 八丈 | はちじょう | plain-woven silk cloth produced on Hachijo Island (sometimes striped) | |
| 八丁 | はっちょう | skillfulness | |
| 一八 | じゅうはち | eighteen; 18 | |
| 八文字 | はちもんじ | (in) the shape of the character hachi (eight) | |
| 八角 | はっかく | octagon; star anise (Illicium verum); sailfin poacher (Podothecus sachi) | n1 |
| 八景 | はっけい | eight picturesque sights | |
| 八つ手 | やつで | fatsi (Fatsia japonica); paperplant; Japanese aralia | |
| 十八番 | おはこ | one's favourite party trick (favorite); one's specialty; one's forte; No. 18 | |
| 七転八倒 | しちてんばっとう | tossing oneself about in great pain; writhing in agony | |
| 二八 | にはち | sixteen | |
| 八重桜 | やえざくら | double-flowered cherry tree; double cherry blossoms | |
| 八段 | はったん | twilled fabric | |
| 大八車 | だいはちぐるま | large two-wheeled wagon | |
| 八千代 | やちよ | very long period; forever; eight thousand years | |
| 四苦八苦 | しくはっく | being in dire distress; being hard put to it; being hard pressed (for money); the four and eight kinds of suffering (birth, old age, disease, death, parting from loved ones, meeting disliked ones, not getting what one seeks, pains of the five skandha) | |
| 八朔 | はっさく | Hassaku orange (Citrus hassaku); 1st of August (lunar calendar) | |
| 嘘八百 | うそはっぴゃく | pack of lies; complete fabrication; all lies | |
| 八つ裂き | やつざき | tearing limb from limb; tearing apart; cutting (a person) to pieces | |
| 八十八夜 | はちじゅうはちや | eighty-eighth day from the beginning of spring | |
| 八百長 | やおちょう | match fixing; put-up job; fixed game | |
| 八十 | はちじゅう | eighty; 80 | |
| 八島 | やしま | Japan | |
| 四通八達 | しつうはったつ | traffic network extending in all directions | |
| 八分目 | はちぶめ | eight-tenths | |
| 八紘 | はっこう | the eight directions; the whole land; the whole world | n2 |
| 八反 | はったん | twilled fabric | |
| 目八分 | めはちぶん | below eye level; about eight-tenths full | |
| 八ツ橋 | やつはし | yatsuhashi; cinnamon-seasoned rice flour cracknel (local delicacy in Kyoto); zigzag bridge | |
| 八尋 | やひろ | great length; great size | |
| 八頭 | やつがしら | form of taro; yam | |
| 八重歯 | やえば | double tooth; protruding tooth (like a fang); high canine | |
| 七顛八倒 | しちてんばっとう | tossing oneself about in great pain; writhing in agony | |
| 岡目八目 | おかめはちもく | bystander's vantage point; outsider's better grasp of the situation; onlookers see more of the game than the players do; people watching a game of go see eight moves further ahead | |
| 八方塞がり | はっぽうふさがり | being boxed in on all sides; having obstacles in every direction; being at a loss (what to do); being in a fix | |
| 八十島 | やそしま | many islands | |
| 八重葎 | やえむぐら | thick patch of mixed weeds; false cleavers (species of bedstraw, Galium spurium var. echinospermon) | |
| 二十八宿 | にじゅうはっしゅく | 28 mansions of Chinese astronomy (constellations dividing the ecliptic into 28 positions) | |
| 八方美人 | はっぽうびじん | everybody's friend; people pleaser; person who is affable to everybody; flunky | |
| 八百万 | やおよろず | myriad; countless things | |
| 黒八丈 | くろはちじょう | thick black silk from Hachijo Island | |
| 弓矢八幡 | ゆみやはちまん | Hachiman, god of war and archery | |
| 八時 | はちじ | eight o'clock | |
| 八端 | はったん | twilled fabric | |
| 八日 | ようか | 8th day of the month; eight days | n5 |
| 勘八 | かんぱち | greater amberjack (Seriola dumerili); purplish amberjack; greater yellowtail | |
| 七転び八起き | ななころびやおき | not giving up; keeping at it until one succeeds; falling seven times, getting up eight; the vicissitudes of life | |
| 八人 | はちにん | eight people | |
| 八手 | やつで | fatsi (Fatsia japonica); paperplant; Japanese aralia | |
| 八方睨み | はっぽうにらみ | staring at or watching all sides | |
| 八重咲き | やえざき | double blossom | |
| 八白 | はっぱく | eighth of nine traditional astrological signs (corresponding to Saturn and north-east) | |
| 藤八拳 | とうはちけん | game of chance similar to rock, paper scissors, where the different hand gestures symbolize a fox, a hunter and a village head | |
| 八面玲瓏 | はちめんれいろう | beautiful from all sides; perfect serenity; affability | |
| 八寸 | はっすん | distance of eight sun (approx. 24 cm); dish or tray of this size (esp. used in kaiseki cuisine to serve several kinds of delicacies); food served in such a dish; variety of thick, traditional Japanese paper | |
| 八巻 | はちまち | turban-like hat worn by officials in the Ryūkyū Kingdom | |
| 八橋 | やつはし | yatsuhashi; cinnamon-seasoned rice flour cracknel (local delicacy in Kyoto); zigzag bridge | |
| 八百 | はっぴゃく | 800; eight hundred; multitude; large number | |
| 四十八手 | しじゅうはって | the 48 basic techniques; every trick in the book; the 48 basic sexual positions | |
| 南総里見八犬伝 | なんそうさとみはっけんでん | Nansō Satomi Hakkenden (1814-42; novel in 106 volumes by Kyokutei Bakin); Eight Dog Chronicles; Tale of Eight Dogs; Biographies of Eight Dogs | |
| 南總里見八犬傳 | なんそうさとみはっけんでん | Nansō Satomi Hakkenden (1814-42; novel in 106 volumes by Kyokutei Bakin); Eight Dog Chronicles; Tale of Eight Dogs; Biographies of Eight Dogs | |
| 丸八 | まるはち | Cyathea mertensiana (species of tree fern) | |
| 八口 | やつくち | small opening in the side of some traditional Japanese clothing (located where the sleeve meets the bodice, below the armpit) | |
| 八道 | はちどう | the 8 districts of feudal Japan | |
| 八十神 | やそがみ | many gods; many deities; many kami | |
| 八裂き | やつざき | tearing limb from limb; tearing apart; cutting (a person) to pieces | |
| 胸突八丁 | むなつきはっちょう | the most trying spot or period; the most difficult period | |
| 一九八四年 | せんきゅうひゃくはちじゅうよねん | Nineteen Eighty-Four (1949 novel by George Orwell) | |
| 八分 | はっぷん | eight minutes; triangular-swept clerical script (clerical script whose horizontal lines end in a noticeable triangular tail) | |
| 口八丁 | くちはっちょう | voluble; eloquent | |
| 熊公八公 | くまこうはちこう | uncultured but well-intentioned person; your average nice guy; Joe Blow; Joe Bloggs | |
| 八苦 | はっく | the eight kinds of suffering (birth, old age, disease, death, parting from loved ones, meeting disliked ones, not getting what one seeks, pains of the five skandha) | |
| 二十八日 | にじゅうはちにち | 28th day of the month; 28 days | |
| 八面六臂 | はちめんろっぴ | competent in all fields; jack of all trades; very active in many fields; versatile | |
| 百八煩悩 | ひゃくはちぼんのう | the 108 kleshas; the 108 afflictions | |
| 八町 | はまち | hamachi; young Japanese amberjack; young yellowtail | |
| 八頭身 | はっとうしん | beautiful well-proportioned woman (body 8 times longer than head) | |
| 十八日 | じゅうはちにち | 18th day of the month; 18 days | |
| 八州 | はっしゅう | Japan; the eight Edo-period provinces of Kanto (Sagami, Musashi, Awa, Kazusa, Shimousa, Hitachi, Kouzuke and Shimotsuke) | |
| 八本 | はちほん | eight (long cylindrical things) | |
| 八風 | はちふう | eight winds; eight things that hinder enlightenment; prosperity, decline, disgrace, honor, praise, censure, suffering, and pleasure; eight winds (e.g. in eight directions) | |
| 八尋殿 | やひろどの | grand palace | |
| 村八分 | むらはちぶ | ostracism; complete ostracism of a household (the harshest punishment in Edo-period village law) | |
| 八大地獄 | はちだいじごく | The Eight Greater Hells | |
| 八目 | やつめ | eighth (place, position, etc.); having eight eyes; having many eyes; (of a fabric) having a loose knit | |