Tokyo word
草
Laughter or something funny, especially in online conversation.
Uses your device’s built-in voice. Pronunciation is approximate because available voices and tokyo pronunciation vary.
Meaning
草 literally means grass, but in Japanese internet slang it represents laughter. It developed from repeated w characters, which resemble blades of grass when grouped together.
Pronunciation and grammar
Pronunciation: /kɯ.sa/
Part of speech: internet slang and reaction
How it is used
It commonly appears in comments, chats, streaming culture, and informal online reactions.
Register: Very informal internet slang.
Examples in context
- その動画、草。That video is hilarious.
- コメント欄が草だらけ。The comment section is full of laughter reactions.
Important context
This sense is mainly online and may be unclear or childish in formal writing or spoken conversation.
Source
Origin and background
The Japanese word 草, literally “grass,” is used online to represent laughter because repeated “w” characters visually resemble grass.
Cultural context
It belongs mainly to internet, gaming, streaming, and youth-text contexts. Spoken use exists but can sound deliberately online or playful.
When to use it
Use it in casual digital communication where Japanese internet conventions are understood.
When not to use it
Avoid it in formal writing, workplace messages, or serious conversations.
Example conversation
A: That ending was so unexpected.
B: 草 — I did not see it coming.
Common misunderstanding
It does not mean that grass itself is funny; the slang comes from a visual internet convention.
Similar words and related language
- www
- 笑
- lol
Compare this entry with the Tokyo guide for this usage type and the complete LocalMean guide directory.
Regional and speaker variation
Local language is never distributed evenly. Age, neighbourhood, family background, profession, friendship group, online communities, and the formality of the moment all affect whether this expression sounds current, familiar, marked, playful, or unusual. A term may be widely recognised without being used every day by everyone from the place. Treat the regional label as useful context, not as a claim that all local speakers share one vocabulary or accent.
How to interpret the examples
The conversation above demonstrates one realistic function, not a script to copy mechanically. Notice the relationship between the speakers, the situation, and the reply. Before using the expression yourself, compare several complete exchanges and listen for tone, pacing, and what follows. When uncertainty remains, plain respectful language is usually more natural than forcing a local term solely to sound authentic.