Informal Nihongo

Let's make a reference for a bunch of informal Japanese phrases. Many of these are idiomatic, that is, they mean something other than the obvious literal meaning of the words they use. (In English, "you're pulling my leg" is a good example of an idiom: what it means has nothing to do with legs or pulling!)

Obviously, informal speech may not be polite speech. In fact, some of these phrases are pretty abrupt or downright rude. Don't speak like an anime character in real life.

あばよ
very informal "goodbye"
あぶね
eroded form of あぶない or "dangerous"
あち いって
literally "go over there," or "get lost"
あち かえれ
get back, go far away
あほ
fool, simpleton, idiot, a bit softer than バーカ
あほんだら
emphatically あほ
あいつ
"that guy" or "that one dude" or "hey you"
あくまびと
literally "devil person" or "spirit"
あまい
literally "sweet," naïve, gullible
あの
a thinking word, um, uh...
あれ
an exclamation of surprise or inquiry

いいだろう
"it's all good, right?" or "it's a deal?"
いいじゃない
"isn't it good, acceptable?"
いいかもしらない
"perhaps it's good, acceptable"
いいよ
"it's good!"
いけない
"that won't go" or it's hopeless
いくぜ
a masculine command, "let's go!"
いや
something "disagreeable," or that's terrible!

うんち
slang for someone physically inept
うるさい
literally "noisy," shut up, be quiet
うっせ
erosion of うるさい
うそ
a lie, a fib, falsehood
うそつき
a "lie maker," a liar

えと
a thinking word, um, hm...
えっち
pronouncing "H", short for へんたい, perverted
エロじじ
"erotic daddy," dirty old man

おは
erosion of おはよう or good morning
おまえ
literally "you in front of me," you there
おい
a call to get attention, hey over there!
おまた
erosion of おまたせしました, sorry to keep you waiting
おsす
another erosion to mean good morning
おもしろい
"amusing", funny, interesting
おもろい
erosion of おもしろい
おひさ
erosion of おひさしぶり, long time no see


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