xián​rén

unauthorized person

闲人 (閒人) xián​rén
unauthorized person noun
a person who has no legitimate reason to be in a specific area

重地闲人

zhòng​dì, xián​rén miǎn jìn.

Restricted area: no unauthorized personnel.

idler noun
an idle person or someone who has nothing to do

He idles around all day and is a well-known loafer.

Frequency

Movie subtitles
1.58 per million appears in 1% of films
Written text
1.43 per million

Sources

Definitions
CC-CEDICT