noun, noun or participle which takes 'suru', intransitive verb
prowling unnoticed; plainclothes patrol
Used for moving stealthily, especially for surveillance or patrolling without being noticed. Often implies a police or security context.
警察官が繁華街を密行している。
Police officers are patrolling the downtown area in plain clothes.
不審な動きがないか、刑
The detective prowled around to check for any suspicious activity.
noun, noun or participle which takes 'suru', intransitive verb
traveling in secret
Refers to traveling without revealing one's identity or destination, often for covert missions or personal privacy.
彼は身分を隠して密行した。
He traveled in secret, hiding his identity.