✨ Basic Meaning
🎯 Primary Function
📋 Grammar Structure
🎭 Usage Contexts
Rarely used in formal situations due to its critical and often impolite nature.
Commonly used in informal conversations among close friends, family, or when complaining.
Used in informal writing, such as personal emails or social media. Less common in formal reports or essays.
Very common in spoken Japanese to express strong feelings of dissatisfaction or criticism.
💡 Common Applications
📌 Important Points
⚠️ Common Mistakes
🏛️ Cultural Context
🔍 Subtle Differences
📝 Conjugation Notes
Connects to the plain form of verbs and い-adjectives. For な-adjectives, use 語幹 + な + くせに (e.g., 暇なくせに). For nouns, use Noun + の + くせに (e.g., 学生のくせに).
🔊 Pronunciation Tips
Pronounced “kuseni”. The “se” sound is like the “se” in “set”. The “ni” is like the “ni” in “knee”. The emphasis is often slightly on the “se”.
🧠 Memory Tips
Think of it as “criticizing a bad habit (くせ – kuse)” or “even though you have this ‘habit’ (くせ), you do this contradictory thing”.

I’m a software engineer based in Japan, with experience in developing web and mobile applications. I’m passionate about technology, especially in DevOps, AI, and app development using platforms like AWS, Flutter, and Node.js. My goal is to build a website that shares knowledge about the Japanese language and IT, helping everyone learn and grow more easily in the digital era.