[ほし, hoshi] (n) (1) star; any light-emitting (or reflecting) heavenly body (except for the sun and the moon); (2) suspect (police slang); (P) #574
[よろしく, yoroshiku] (exp, adv) (1) (uk) (夜露死苦 is slang) well; properly; suitably; (2) best regards; please remember me; please treat me favorably (favourably); please take care of; (P) #7402
[ほそい, hosoi] (adj-i) (1) thin; slender; fine; (2) (sl) unlucky (billiards slang); (P) #14483
[ひき, hiki] (n) (1) (uk) (See ピストル) gun (slang); pistol; (2) (See お弾き) tiddlywinks; marbles; (3) repellence #15236
[ごはん(P);おまんま(御飯), gohan (P); omanma ( gohan )] (n) (1) (おまんま is slang and uk) cooked rice; (2) meal; (P) #16714
[dosu] (n) (1) dagger (esp. in yakuza slang); (2) { comp } disk operating system; DOS; (P) #17311
[surangu] (n) slang #19125
[a-ta] (n) (sl) (See あんた) you (slang for anta, often used by a wife addressing her husband)
[kotta] (exp) (col) (from 事だ) slang form of "koto da"
[konchi] (n-t) (sl) (esp. 下町 slang) (See 今日・1) today; this day
[gottsuan] (exp) (sl) thank you (sumo slang)
[nikoyon ; nikoyon] (n) (See 日雇い労働者) day laborer (slang term)
[nuko] (n) (col) (See 猫) cat (net slang)
[bobo] (n) baby; doll; pussy(cat); slang for cunt
[maiu-; maiu] (n, adj-f) (sl) delicious (slang reversal of "umai")
[yari kon ; yarikon] (n) blind date party, with the object of sex (slang)
[supafaku] (n) (abbr) student slang for the restaurant chain "Spaghetti Factory"
[choberigu] (n) very, very good (teen slang)
[choberiba] (exp) (sl) (from 超, ベリー, バッド) very, very bad (teen slang)
[chomuka] (n) very sickening (teen slang)
[tondemo] (exp) (slang) ridiculous; outrageous; obviously wrong
[nau i] (adj-i) (See ナウ) modern (slang from the 1980s); trendy; hip; in; up-to-date
[paiitsu] (n) full cup (slang term from "ippai" reversed)
[patsukin] (n) blond hair (slang term from "kinpatsu" reversed)
[bu-musurangu] (n) boomslang (species of venomous snake, Dispholidus typus)
[ポリこう, pori kou] (n) slang for police officer
[moga] (n) (abbr) modern girl; flapper (slang from the 1920s)
[modanga-ru] (n) modern girl (slang circa the 1920s)
[modanbo-i] (n) (arch) (See モダンガール) modern boy (slang circa the 1920s)
[mobo] (n) (arch) (abbr) (See モダンボーイ) modern boy (slang circa the 1920s)
[rettsurago-] (int) (sl) (1970s slang, pun on the manga レッツラゴン) (See レッツゴー) let's go
[warota] (exp) (sl) (past tense of ワロス) I LOL'd (2Chan slang)
[いったく, ittaku] (n) (sl) (only) one option (game slang); one possible choice
[うそつけ, usotsuke] (n) (uk) (See 嘘つき) liar (slang); fibber
[がまんじる, gamanjiru] (n) (sl) pre-ejaculate; pre-ejaculatory fluid; Cowper's fluid; slang
[げんご, gengo] (n) (1) colloquialism; slang; (2) proverb
[ところてん, tokoroten] (n) (1) { food } gelidium jelly strips (made from agar-agar); (2) (uk) (vulg) (gay slang) prostate orgasm
[ぞくに, zokuni] (adv) as slang; commonly
[とおりことば, toorikotoba] (n) common saying; slang; argot
[はげどう, hagedou] (n, vs) (sl) strong agreement (2ch slang)
[ひげん, higen] (n) slang expression
[もじことば, mojikotoba] (n) (See 女房詞) slang created by retaining the first syllable (or two) of a word and suffixing it with "moji"
[べいぞく, beizoku] (n) dictionary tag indicating colloquialism, slang or vulgarity of American origin
[ほんぼし, honboshi] (n) (sl) real culprit (police slang)
[あけておめでとうございます, aketeomedetougozaimasu] (int) (obsc) (slang form of 明けまして...) Happy New Year
[りげん, rigen] (n) slang; dialect
[りご, rigo] (n) (obsc) (See 俗語) slang; dialect