すん

do

→ 為る
verb · informal Rare #43,264
do A colloquial contraction of する, often heard before の.
JA: これ、どうすんの?
EN: What are you going to do about this?
Conjugation of 為る
Imperfect
Present
Desiderative future
Irrealis
Quotative
Potential present
Desiderative present
Potential future
Subjunctive present
Imperative present
Jussive

オレのせいにすんのか!

You’re blaming me for this?!

— The Garden of Sinners: Paradox Spiral (2008)

与えられた生命を無駄にすんのは神に対する冒涜ですよ

Wasting the life you've been given is blasphemy against God.

— 生きる (1952)

鉄雄は俺たちの仲間だヤツを始末すんのは俺たちだ!

Tetsuo's one of us. We're the ones who'll finish him off!

— AKIRA (1988)

英語が下手くそだからって子供扱いすんのやめてくんない?

Could you stop treating me like a child just because my English sucks?