1.
rapid approach; quick closing of distance
A physical object or person approaching rapidly. Used for vehicles, aircraft, or other objects moving quickly toward something.
台風が急接近している。
The typhoon is rapidly approaching.
後ろから車が急接近してきた。
A car rapidly approached from behind.
敵の戦闘機がレーダーに映り、こちらに急接近していることが判明した。
An enemy fighter appeared on radar and was found to be rapidly approaching our position.
2.
suddenly becoming close; rapid development of a relationship
A sudden deepening of a personal or diplomatic relationship. Often used in gossip media for romantic relationships or in news for political relations between countries.
二人は急接近した。
The two suddenly became close.
共演をきっかけに急接近したと報じられた。
It was reported that they suddenly became close after co-starring together.
両国は経済協力を通じて急接近し、新たな同盟関係を築いた。
The two countries rapidly drew closer through economic cooperation and built a new alliance.
Composed of 急 (sudden, rapid) and 接近 (approach, proximity).
Sense 2 is very common in tabloid headlines and entertainment news, especially for celebrity romantic relationships.
COMMON COLLOCATIONS:
- 台風が急接近する (a typhoon rapidly approaches)
- 二人が急接近する (two people suddenly become close)
- 両国が急接近する (two countries rapidly draw closer)