How to Say ‘Idiot / Stupid’ in Japanese
バカ
baka
[BAH-kah]
🇯🇵 In Japan: Japanese has few true swear words, so バカ carries real weight. Between close friends it can be teasing, but said to a stranger or coworker it's a genuine insult.
Phrase Breakdown
バカ
baka
[BAH-kah]
idiot
Common insult meaning fool or stupid.
バカ、何やってるの。
Idiot, what are you doing?
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
Get Full LessonWhat 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