조사 jo-sa

Particles are the core of Korean. 은/는 (topic), 이/가 (subject), 을/를 (object), 에/에서 (location), 로/으로 (direction/means). Because of particles, word order becomes flexible.

◆ Grammar — Particles are never used independently and are always attached to nouns. It's a concept that doesn't exist in English, but it's the price paid for flexible word order.

◆ legal_interrogation — Speakers use this to refer to formal interrogations or investigations conducted by authorities like the police or prosecutors. It frequently combines with verbs indicating the experience of undergoing such a process, most notably in the collocation 조사를 받다. It also appears alongside verbs like 벌이다 and 실시하다 when describing official bodies carrying out inquiries. The context is typically serious, pointing to legal or institutional oversight.

Because of its frequent association with criminal investigations and official questioning, hearing that someone is undergoing 조사를 can carry a heavy, stressful weight in conversation.

◆ private_sleuthing — Speakers use this term when investigating or examining the details of an affair or a situation. It frequently appears in compounds like 뒷조사 to describe looking into someone's background or private life. The term turns up in contexts where information is gathered to understand a situation, such as investigating causes or checking records.

When used in personal relationships or drama contexts to refer to digging into someone's private background, it often carries a secretive or intrusive tone.