潜せん入にゅう

せ

ん

にゅ

う

Common wordJLPTN1Freq.FrequencyTop 10,000

潜入する · noun or participle which takes 'suru'

Meanings

infiltration; sneaking in; going undercover

Used for secretly entering a place, often for investigation, espionage, or undercover operations. Commonly appears as 潜入する or 潜入捜査.

〈場ば所しょ〉に潜せん入にゅうするto infiltrate a place
捜そう査さ官かんが敵てきの基き地ちに潜せん入にゅうした。
The investigator infiltrated the enemy base.
〈組そ織しき〉に潜せん入にゅうするto infiltrate an organization
彼かれは犯はん罪ざい組そ織しきに潜せん入にゅうして情じょう報ほうを集あつめた。
He infiltrated the criminal organization to gather information.
潜せん入にゅう捜そう査さを行おこなうto carry out an undercover investigation
警けい察さつは潜せん入にゅう捜そう査さを行おこない、証しょう拠こをつかんだ。
The police carried out an undercover investigation and gathered evidence.

侵しん入にゅうN2
潜入 stresses stealth and secrecy in entering a place, while 侵入 emphasizes forceful or unauthorized entry regardless of secrecy.
潜せん伏ぷく
潜入 refers to the act of secretly entering a place, whereas 潜伏 refers to staying hidden somewhere after having entered.
忍しのび込こむN1
潜入する suggests deliberately infiltrating a place or organization (often for espionage), whereas 忍び込む is more about quietly entering a physical space unnoticed.

スパイN1
スパイ names the person who spies, while 潜入 names the act of secretly getting into a place, so they aren't interchangeable in a sentence.

Compound of 潜 (せん, 'to hide, to go under') and 入 (にゅう, 'to enter'). The kanji combination directly conveys the meaning of entering secretly.