な
(Na)
A strong prohibition used to command someone not to do something.
Connection rules
- +Verb (dictionary form) + な
Examples
1.
ここで煙草を吸うな。

Koko de tabako wo suu na.
Don't smoke here.
「Sign in public area」
2.
「ここにごみを捨てるな!」と書いてある。

‘ koko ni gomi wo suteru na! ’ to kai te aru.
It says 'Don't litter here!'
「No dumping sign」
Practice
Don't forget your umbrella.
傘を___。
Romaji also accepted