Particle (Basic 266)

A negative imperative marker used by a male speaker in very informal speech

Equivalent: Don't do ~

煙草を吸う
Don't smoke!
酒をあまり飲む
Don't drink too much sake!
そんな所にもう行く
Don't go to such a place any more!
あんな男とは結婚する
Don't marry that kind of man!
もう帰って来る
Don't come home any more!

Formation

Vinformal nonpast  
  話す Don’t talk!
  食べる Don’t eat!

Notes

1. is a strong negative imperative and is seldom used except in highly emotional situations. However, the addition of よ after serves to soften the force of the statement.

2. A female speaker normally does not use the imperative. She uses Verb negative ないで, as in 話さないで 'Don't talk.' or 食べないで 'Don't eat.'

(⇨ ください, Note 3)