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Japanese Internet Slang and Abbreviations: A Modern Guide

From www to kusa, learn the internet slang, text abbreviations, and online expressions that Japanese speakers use on social media, chat apps, and forums.

公開: 2025年2月1日· KotobaPeek編集部

The Wild World of Japanese Internet Language

Japanese internet culture has developed its own rich vocabulary that differs significantly from textbook Japanese. If you follow Japanese social media accounts, read comments on YouTube, or chat with Japanese friends online, you will encounter expressions that no classroom teaches. Understanding this digital vocabulary is increasingly important as online communication becomes a primary mode of interaction for younger generations.

Laughing Online

One of the first things you need to understand in Japanese internet culture is how people express laughter:

Common Text Abbreviations

Emoticons and Kaomoji

Japanese emoticons, called kaomoji (顔文字, face characters), are read horizontally unlike Western emoticons:

Social Media Vocabulary

A Word of Caution

Internet slang evolves rapidly and varies by platform and age group. What is trendy today may be outdated in six months. Use these expressions only in casual online contexts, never in business communication or formal writing. For standard definitions and formality levels, check KotobaPeek.

単語と定義を調べる

無料ツールを使って単語の定義を調べたり、紛らわしい単語を並べて比較しましょう。

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定義は複数の権威ある辞書データベースから編纂し、計算言語学的分析で検証、毎月更新しています。

出典: 日本語辞書データベース · コーパス言語学データ · 語源記録

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