大草原

• Reading: だいそうげん
• Romaji: daisougen
• Kanji breakdown: 大 (great/big) + 草 (grass) + 原 (field/plain) → a vast grassland of laughter, extending the 草 = LOL metaphor
• Pronunciation: /da.i.so.u.ge.n/

Meaning

ROFL or hysterical laughter — literally 'great grassland,' an intensification of the internet slang 草 (grass = LOL).

In Japanese internet culture, the letter w (from warai, laughter) indicates laughing. Many w's together (wwwww) visually resemble blades of grass, leading to 草 (kusa, grass) meaning LOL. 大草原 (great grassland) takes this further — something so funny that a whole grassland has sprouted. It indicates something is absolutely hilarious, beyond what a simple 草 can convey. Common on 5channel, Nico Nico Douga, and Twitter/X.

Examples

1. この動画大草原なんだけどw This video is absolutely killing me lol.
2. あのシーン見た？大草原不可避だったわ。 Did you see that scene? Couldn't help dying laughing.
3. 友達の失敗談聞いて大草原だった。 I heard my friend's fail story and was rolling on the floor.

Usage Guide

Context: social media, online chat, text messages

Tone: humorous, exaggerated

Do Say

• あの実況、大草原だったわ。 (That live commentary was absolutely hilarious.)
• 大草原不可避。 (Can't help but die laughing.)

Don't Say

• 面と向かって「大草原」と言うのは不自然 (Saying daisougen out loud face-to-face sounds unnatural — it is primarily text-based slang)

Common Mistakes

• Using 大草原 in spoken conversation — it is mostly written internet slang and sounds odd when spoken aloud
• Not knowing the w → 草 → 大草原 progression of internet laughter vocabulary

Origin & History

Evolved from 2channel/Nico Nico Douga culture where w (warai) = laughter, wwwww looks like grass (草), and an enormous amount of laughter = a vast grassland (大草原). Popularised in the late 2000s-2010s.

Cultural Context

Era: Late 2000s-2010s internet culture

Generation: Teens to 30s (internet-native users)

Social background: Internet/otaku culture

Regional notes: Used across Japan in online spaces. Part of the broader w/草 internet laughter vocabulary.