盛り上がる

• Reading: もりあがる
• Romaji: moriagaru
• Kanji breakdown: 盛 (sei/mo) — to pile up, prosperous, flourishing; 上 (jō/a) — to rise
• Pronunciation: /mo.ɾi.a.ɡa.ɾɯ/

Meaning

To swell up; to rise; to become lively or exciting; to build up in atmosphere or emotion.

A Group 1 (godan) verb. Physically describes something swelling or rising (terrain, muscles, dough). In colloquial and social contexts — and extremely commonly — it describes a gathering or conversation becoming lively and animated (パーティーが盛り上がる). Also used for emotional climax or narrative build-up. One of the most versatile and frequent verbs in social and entertainment contexts.

Examples

1. 会場全体が盛り上がり、大きな歓声が上がった。 The entire venue got fired up, and a huge cheer erupted.
2. 話が盛り上がって気づいたら深夜になっていた。 The conversation got so lively that before we knew it, it was the middle of the night.
3. 試合終盤に向けてスタジアムが大きく盛り上がった。 The stadium built up to a massive crescendo toward the end of the game.

Usage Guide

Context: social events, sports, conversation, entertainment

Tone: energetic

Origin & History

Compound of 盛り (heaping up, a heap — from 盛る) and 上がる (to rise). The image is of something heaping up and rising naturally, whether terrain or a festive atmosphere.

Cultural Context

Era: Modern

Generation: All ages

Social background: Universal