PrettyFluent
This is just a lesson preview. Get the interactive lesson free on PrettyFluent
👈😒

How to Say ‘This guy (rude)’ in Japanese

こいつ

koitsu

[KOY-tsoo]

💬 Usage Tip: こいつ follows the same pattern as こ・そ・あ words: そいつ "that guy (near you)" and あいつ "that guy over there". All three are rough ways to refer to people.

Phrase Breakdown

こいつ

koitsu

[KOY-tsoo]

this guy; this jerk

Contemptuous way to refer to a person close by; can also be affectionate among friends.

Example

こいつ、また遅刻した。

This guy was late again.

Get the Full Learning Experience

This lesson is just a preview. Download PrettyFluent to practice pronunciation, roleplay conversations, and master vocabulary with spaced repetition.

Pronunciation Feedback

AI-powered feedback on what you say out loud

Spaced Repetition

Retain vocabulary long-term with smart practice

Immersive Roleplaying

Practice real conversations with AI partners

Lessons for Your Situation

Request lessons tailored to your specific needs

Download PrettyFluent on the App StoreGet Full Lesson

What Learners Are Saying

“Teaching in Osaka and I wanted to connect with my students beyond the classroom. The everyday conversation made my Japanese feel natural, not textbook-y.”

Mia S., 25, English Teacher

“I hop cities every few months and this is the only app that actually prepares me for living somewhere, not just visiting. Tokyo was the real test — passed with flying colors.”

James O., 28, Remote Worker

“I tried five different apps before this one. The roleplay conversations are what finally made things click. I actually remember what I learn now.”

Sofia R., 31, Marketing Manager