What does moonlight mean?
Moonlight literally denotes the light of the moon, especially the pale, silvery illumination visible at night. Because the moon reflects rather than produces visible light, moonlight is generally softer and less intense than sunlight, and writers often associate it with secrecy, romance, or quiet beauty. Moonlight also has an informal figurative use: to moonlight is to hold an extra job or pursue another form of work outside one’s normal hours, often in the evening. In this sense, the verb describes working two jobs or combining one occupation with another to earn additional income. The two meanings are related imaginatively, since evening work might traditionally have been done by moonlight, although the figurative use is mainly modern and informal. Together, these senses make moonlight unusually versatile: it names a familiar natural phenomenon while also suggesting the practical struggle to earn a living.
The light of the moon; by extension, an additional job or activity undertaken outside normal working hours.
"They crossed the quiet field by moonlight."
The word for reflected lunar light is normally uncountable. In the figurative sense, moonlight may be countable when referring to a separate extra job.
To work at a second job or perform paid work outside normal working hours.
"She moonlights as a photographer on weekends."
Informal; often implies evening or night work in addition to a principal occupation.
Usually used in the figurative sense for separate additional jobs; the noun meaning reflected lunar light is normally uncountable.
"He juggled several moonlights while completing his degree."
Moonlight has a double life: it is both the glow in the night sky and the second job that helps pay the bills.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does moonlight come from?
Moonlight is a compound formed from the Old English words mōna, meaning “moon,” and lēoht, meaning “light.” The word moon ultimately reflects the Proto-Indo-European root shared with month, while lunar and lunule entered English through Latin words derived from the same ancestral root. The verb meaning “to work at a second job” developed in the 19th century and is thought to evoke work undertaken at night.
Related word forms
How moonlight is actually used
The noun is standard in both British and American English and can carry a poetic or romantic association. The verb is informal and sometimes slightly disparaging when it suggests irregular or exhausting working hours.
Easily confused with moonlight
Moonlight is light reflected by the moon, whereas moonshine usually refers to an illicitly distilled alcoholic drink.