地雷

• Reading: じらい
• Romaji: jirai
• Kanji breakdown: 地 (ground) + 雷 (thunder/mine) → hidden explosive danger underfoot
• Pronunciation: /dʑi.ɾa.i/

Meaning

A landmine — something or someone that looks normal on the surface but turns out to be a hidden disaster.

Borrowed from the military term for landmine, 地雷 in slang describes people, products, restaurants, or situations that seem fine initially but reveal themselves to be terrible once you engage. It is especially popular in dating contexts (地雷女/地雷男 for someone who turns out to be a nightmare partner) and in consumer reviews. The word carries a sense of being blindsided by something unexpectedly awful.

Examples

1. あの人、見た目は普通だけど完全に地雷だった。 That person looked normal, but they turned out to be a total landmine.
2. マッチングアプリ地雷多すぎて疲れた。 I'm exhausted from all the landmines on dating apps.
3. このレストラン、地雷かと思ったけど意外と美味しかった。 I thought this restaurant would be a landmine, but it was surprisingly good.

Usage Guide

Context: friends, dating, social media, reviews

Tone: wary, warning, disappointed

Do Say

• あの店地雷だから行かないほうがいいよ。 (That restaurant is a landmine — don't go.)
• マッチングアプリで地雷踏んだわ。 (I stepped on a landmine on the dating app.)

Don't Say

• 本人の前で「地雷」呼ばわりはさすがに失礼 (Calling someone a 'landmine' to their face is genuinely rude)

Common Mistakes

• Not understanding the 'hidden' nuance — 地雷 implies the problem was not obvious beforehand
• Using 地雷 for things that are openly bad — it specifically means something that looks OK but turns out terrible

Origin & History

From the military term 地雷 (landmine). The figurative slang usage — describing hidden disasters — became popular in the 2000s–2010s through internet culture, dating discussions, and consumer reviews.

Cultural Context

Era: 2000s–2010s internet and dating culture

Generation: Millennials and Gen Z

Social background: Universal informal

Regional notes: Used nationwide. Especially common in dating app culture and online reviews.