密みつ入にゅう国こく者しゃ

Meanings

1

noun

Refers to a person who enters a country without legal permission. Often used in news and legal contexts.

someone, person

不ふ法ほう入にゅう国こく者しゃ
Synonymous; 不法入国者 is also common and may be used interchangeably.
密みつ入にゅう国こく
The act of illegal entry; 密入国者 is the person who commits it.

Compound of 密 (secret, illegal), 入国 (entry into a country), and 者 (person).