なっ

don't (emphatic prohibition), (adds emphasis to a statement or exclamation), What?!, Huh?!

→ な
particle Rare #28,628
don't (emphatic prohibition) The small っ adds force; this use can sound sharp or forceful.
JA: そこに入るなっ!
EN: Don't go in there!
(adds emphasis to a statement or exclamation) Colloquial sentence ending; the exact nuance depends on context.
JA: 今日はいい天気だなっ。
EN: What a nice day it is!
Forms of な

見たかったなっ

I wish I could’ve seen it.

— すずめの戸締まり (2022)

そう怖い顔をするなっ

Don't make such a scary face!

— もののけ姫 (1997)

おいゆりなっ?

Hey, Yuri, right?

— 万引き家族 (2018)

寄るなっ

Stay away!

— もののけ姫 (1997)

頭いいんだよ祥太はなっ

Shota’s really smart, you know.

— 万引き家族 (2018)

ほらなっ?

See? I told you!

— 万引き家族 (2018)

ほら来たなっ?

See? Here it comes!

— 万引き家族 (2018)

interjection Rare #36,371
What?!, Huh?! An abrupt, expressive reaction of surprise or disbelief, especially in dialogue.
JA: なっ、もう終わったの?
EN: What?! It's already over?

なっ

Wha—

— AKIRA (1988)

なっ…

Wha…

— Pompo the Cinephile (2021)

なっ?

Huh?

— 万引き家族 (2018)

なっ何だ?

W-What?

— AKIRA (1988)

なっよいしょ

There we go—heave-ho!

— 万引き家族 (2018)