潜入

• Reading: せんにゅう
• Romaji: sennyū
• Kanji breakdown: 潜 (sen/mogu) — to lurk, submerge, hide; 入 (nyū/i) — to enter
• Pronunciation: /seɴ.ɲɯː/

Meaning

Infiltration; going undercover; sneaking into a place or organisation covertly.

Used as a する-verb (潜入する). Describes covert entry for the purposes of investigation, espionage, or journalism. 潜入取材 (undercover reporting) is a common journalistic technique. Also appears in fiction, gaming, and spy contexts. Unlike 侵入 (intrusion, trespassing), 潜入 emphasises stealth and concealment of identity.

Examples

1. 記者は闇カジノに潜入して実態を取材した。 The journalist went undercover into an illegal casino to report on its operations.
2. 捜査官が犯罪組織に潜入し、証拠を集めた。 An investigator infiltrated a criminal organisation and gathered evidence.
3. 潜入調査によって施設内の劣悪な環境が明らかになった。 An undercover investigation revealed the appalling conditions inside the facility.

Usage Guide

Context: journalism, crime, espionage, fiction

Tone: neutral

Origin & History

Compound of 潜 (to submerge, to lurk, to hide) and 入 (to enter). The character 潜 appears in 潜水 (diving) and 潜在 (latent), always suggesting something hidden beneath the surface. Together, the compound evokes entering a place while remaining unseen.

Cultural Context

Era: Modern

Generation: All ages

Social background: Universal