You know how MBTI basically took over the internet for a while, with everyone scrambling to figure out if they’re an INFP or an ESTJ? Well, just when it seemed like the “personality type” craze had peaked, a fresh new trend is sweeping through Korea. Say hello to 에겐남 (Egen-nam) and 테토남 (Teto-nam). This new way of describing people isn’t just about strictly personality types or tests. It’s all about vibe.
MBTI Mania

First, a quick refresher. The MBTI classifies people into 16 types based on four dichotomies: Introvert vs. Extrovert, Sensing vs. Intuition, Thinking vs. Feeling, and Judging vs. Perceiving. It became a pop culture phenomenon in Korea, used to predict love compatibility, settle friend group debates, and even analyze K-pop idols. But while MBTI was great for sparking conversation, it often felt a bit too rigid or overused.
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Enter Egen-nam and Teto-nam
The new buzzwords are inspired by “estrogen” and “testosterone,” but don’t worry, this trend isn’t about biology. Instead, it’s a way to categorize guys based on their energy or aura. Think of it like a vibe check, not a blood test.

Estrogen types are emotionally intuitive, soft-spoken, and gentle. These guys have a calming presence and a warm, empathetic vibe. You feel safe around them. Think Park Bo-gum, Jung Hae-in, or Byun Woo-seok.

Testosterone types are charismatic, confident, and assertive. These guys have a strong presence and lead with their actions. They can be bold but also emotionally intelligent. Think Dex from Single’s Inferno, SEVENTEEN’s Mingyu, and NCT’s Jaehyun.
It’s not a scale of better or worse; it’s just two equally attractive energies that appeal in different ways.
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Why Is This Trend So Popular?
It’s visual and intuitive. You don’t need a quiz to figure out someone’s type. Just look at their energy. Are they the soft, eye-smiling type or the confident, smoldering type?
It’s rooted in real-world examples. While MBTI can feel abstract, this trend is about vibes you recognize from real life and the media.
It’s quick, fun, and shareable. On Instagram, TikTok, and X (Twitter), fans are categorizing their favorite idols, actors, and even fictional characters into Egen-nams or Teto-nams. It’s become a new go-to way to ask: “What’s your ideal type?”
Final Thoughts
This new personality lens feels perfectly tuned to where pop culture and social dynamics are right now. As gender expectations loosen and emotional intelligence becomes the new sexy, the idea of labeling people based on energy rather than fixed traits is refreshing. So, who’s your type?
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