| Term | Definition |
| kuwawaru (加わる) | to join, to enter, to take part, to participate; to increase, to gain [speed], to gather |
| kuwazugirai (食わず嫌い) | a prejudice |
| kuyakusho (区役所) | a ward office |
| kuyami (悔み) | condolence, repentance |
| okuyami o iu (お悔みを言う) | to express one's condolences/sympathy |
| okuyami mōshiagemasu (お悔み申し上げます) | Please accept my condolences |
| kuyamu (悔む) | to repent, to regret, to mourn; to condole |
| kuyashigaru (悔しがる) | to be vexed, to feel mortified, to resent |
| kuyashii (悔しい) | mortifying, vexing |
| kuyashinamida (悔し涙) | tears of vexation |
| kuyashimagireni (悔し紛れに) | out of vexation/spite |
| kuyokuyo suru (くよくよする) | to worry (oneself), to brood |
| kuyō suru (供養する) | to hold a service for |
| kuyurasu (燻らす) | to smoke [a cigar], to burn [incense] |
| kuzu (屑) | waste, rubbish, scraps, rags, crumbs |
| ningen no kuzu (人間の屑) | the scum of society |
| kuzu (葛) | an arrowroot |
| kuzuyu (葛湯) | arrowroot starch gruel |
| kuzukago (屑籠) | a wastebasket, a wastepaper basket |
| kuzureru (崩れる) | to crumble, to collapse, to give way, [形が] to get out of shape, [天気が] to break, [相場が] to slump |
| kuzusu (崩す) | to pull down, to break (down), to destroy; to change [into small money]; to write in running style; [姿勢を] to sit at ease |
| kuzutetsu (屑鉄) | scrap iron |
| kyabetsu (キャベツ) | cabbage |
| hanakyabetsu (花キャベツ) | a cauliflower |
| rōrukyabetsu (ロール・キャベツ) | stuffed cabbage roll |
| kyakka (却下) | rejection, dismissal |
| kyakka suru (却下する) | to reject, to dismiss |
| kyakkan (客観) | an objective view |
| kyakkanteki (客観的) | objective |
| kyakkantekini (客観的に) | objectively |
| kyakkansei (客観性) | objectivity |
| kyakkō (脚光) | the footlights |
| kyakkō o abiru (脚光を浴びる) | [劇が] to be staged, [人が] to be in the limelight, to get into the limelight |
| kyaku (客) | a caller, a visitor; a guest, [商店の] a customer, a patron, [弁護士の] a client, a passenger |
| kyakuashi ga tsuku (客足がつく) | to gain custom |
| kyakuashi ga heru (客足が減る) | to lose custom |
| kyakuashirai ga yoi (客あしらいが良い) | to give good service; to be a good host |
| kyakuashirai ga warui (客あしらいが悪い) | to give poor service; to be a poor host |
| kyakuchū (脚注) | footnotes |
| kyakudane ga yoi (客種が良い) | to have refined customers [-> 客筋が良い] |
| kyakudane ga warui (客種が悪い) | to have low customers [-> 客筋が悪い] |
| kyakudome (客止め) | a full house |
| kyakudome suru (客止めする) | to turn away customers |
| kyakuhiki (客引き) | a tout, [見せ物の] a barker |
| kyakuhiki o suru (客引きをする) | to tout |
| kyakuhon (脚本) | a play, a drama, [映画の] a scenario, a script |
| kyakuhonka (脚本家) | a playwright |
| kyakuin (客員) | an associate member, an honorary member |
| kyakuinkyōju (客員教授) | a guest professor, a visiting professor |
| kyakuin (脚韻) | a rhyme |
| kyakuma (客間) | a drawing room |
| kyakuseki (客席) | a seat (for a guest) |
| kyakusen (客船) | a passenger boat |
| kyakusenbi (脚線美) | the beauty of leg lines |
| kyakusenbi no (脚線美の) | with shapely legs |
| kyakusha (客車) | a passenger car, a coach |
| kyakushitsu (客室) | a guest room; a passenger cabin |
| kyakushitsugakari (客室係) | a room clerk |
| kyakushoku (脚色) | dramatization |
| kyakushoku suru (脚色する) | to dramatize, to adapt for a play |
| kyakushōbai (客商売) | the hotel/restaurant/entertainment business |
| kyakusuji ga yoi (客筋が良い) | to have refined customers [-> 客種が良い] |
| kyakusuji ga warui (客筋が悪い) | to have low customers [-> 客種が悪い] |
| kyakuyoseni (客寄せに) | (in order) to attract customers |
| kyankyan naku (きゃんきゃん啼く) | to yelp, to yap |
| kyanpingukā (キャンピング・カー) | a camper, a motorized caravan |
| kyanseru (キャンセル) | cancellation |
| kyanseru suru (キャンセルする) | to cancel |
| kyanseruryō (キャンセル料) | a cancellation fee |
| kyapitarugein (キャピタル・ゲイン) | capital gains |
| kyapitarugein kazei (キャピタル・ゲイン課税) | taxation on capital gains |
| kyapitarurosu (キャピタル・ロス) | capital losses |
| kyarako (キャラコ) | calico, muslin |
| kyara (伽羅) | aloeswood |
| kyarakō (伽羅香) | aloeswood perfumery |
| kyarakutāshōhin (キャラクター商品) | products featuring characters from animated movies and cartoons |
| kyariaūman (キャリア・ウーマン) | a working woman, a career woman/girl |
| kyashana (華奢な) | delicate, slim, slender |
| kyatatsu (脚立) | a stepladder |
| kyatchi (キャッチ) | a catch |
| kyatchibōru o suru (キャッチボールをする) | to play catch |
| kyatchikopī (キャッチ・コピー) | a flashy advertisement, an advertising copy |