乱立する

• Reading: らんりつする
• Romaji: ranritsu suru
• Kanji breakdown: 乱 (ran/midare) — disorder, chaos; 立 (ritsu/tatsu) — to stand, to rise
• Pronunciation: /ɾa.ɴ.ɾi.tsɯ.sɯ.ɾɯ/

Meaning

To stand in disarray; to proliferate chaotically; to spring up in large numbers without order or coordination.

A Group 3 (irregular suru) compound. Literally means things standing (立) in a disordered (乱) manner. Used when many competing entities — businesses, political candidates, buildings, or organisations — arise in an uncontrolled, crowded fashion. It implies a lack of regulation or planning.

Examples

1. 規制緩和後、新興企業が市場に乱立した。 After deregulation, startups proliferated chaotically in the market.
2. 街のあちこちに似たような飲食店が乱立している。 Similar restaurants have sprung up all over the city in disarray.
3. 候補者が乱立したため、票が分散して結果が読めない。 With so many candidates running, the votes were split and the outcome was unpredictable.

Usage Guide

Context: economics, politics, urban planning, elections, journalism

Tone: critical

Origin & History

Compound of 乱 (ran — disorder, chaos) and 立 (ritsu/tatsu — to stand, to rise up). The combination captures the image of things shooting up without order — like weeds in a neglected garden. Used in political and economic commentary from the Meiji era onwards.

Cultural Context

Era: Modern

Generation: Adults

Social background: Educated