陰で悪口を言う

かげでわるくちをいう

to insult someone behind their back

悪口雑言

あっこうぞうごん わるぐちぞうごん

all kinds of malicious gossip, heaping verbal abuse (on), cursing and swearing (words)

悪口

あっこう わるくち わるぐち

abuse, insult, slander, evil speaking, bad mouth

悪言

あくげん あくごん

uncomplimentary remarks, slander

悪く言う

わるくいう

to deprecate, to traduce

寝言を言う

ねごとをいう

to talk in one's sleep

口言葉

くちことば

spoken language, spoken words

口小言

くちこごと

scolding, faultfinding

悪たれ口

あくたれぐち

abuse, insult, slander, evil speaking

口が悪い

くちがわるい

sarcastic, having a sharp tongue, having a sharp nasty tongue

口の悪い

くちのわるい

sarcastic, foulmouthed, having a sharp tongue, having a sharp nasty tongue

口を拭う

くちをぬぐう

to feign innocence, to feign ignorance

物を言う

ものをいう

to speak (of something)

礼を言う

れいをいう

to thank

早口言葉

はやくちことば

tongue twister

どの口が言う

どのくちがいう

I don't want to hear it from you, are you in any position to say that?

目は口ほどに物を言う

めはくちほどにものをいう

one can say more with a look than with ten thousand words, the eyes cannot belie one's true thoughts, the eyes are the windows to the soul, eyes are as eloquent as the tongue

口を酸っぱくして言う

くちをすっぱくしていう

to say time and time again, to say till you're blue in the face

傷口を縫う

きずぐちをぬう

to suture a wound, to sew up a wound