What does janitor mean?
A janitor is a person employed to clean a building or facility and handle routine maintenance. The role commonly includes sweeping, mopping, emptying bins, cleaning restrooms, and keeping shared areas in good condition; in some workplaces, the janitor also performs small repairs or checks building systems. The word is neutral, familiar, and used in both American and British English, especially in schools, offices, hospitals, apartment buildings, and other large facilities. Although it is sometimes considered slightly old-fashioned, it remains a clear occupational label, more specific than “cleaner” because it can suggest responsibility for the general upkeep of a building. The word also has an interesting history: it comes from Latin janitor, originally meaning “doorkeeper,” which reflects the occupation's older association with caring for entrances and access points.
nounA janitor is a person employed to clean and maintain a building or its facilities, such as an office, school, hospital, or apartment building. The term may also refer to someone responsible for general upkeep and minor repairs.
- A person whose occupation is to clean and maintain a building or facility.
- A person responsible for general upkeep and minor repairs in a building or property.
"The janitor mopped the entrance before the building opened in the morning."
"The school janitor checked the heating system and repaired a leaking tap."
"A notice on the office door asked employees to report maintenance concerns to the janitor."
Used when referring to more than one person with this occupation.
"The janitors cleaned the building every evening."
From the Latin janitor, meaning “doorkeeper,” the wordjanitor grew from guarding entrances to keeping entire buildings in order.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does janitor come from?
The English word janitor comes from Latin janitor, meaning “doorkeeper,” a noun formed from janua, “door,” with the agent suffix -tor. In ancient Rome, janitores guarded or managed doorways, and over time the word's meaning broadened to include people responsible for cleaning and maintaining buildings. It was borrowed into English with the sense of a building cleaner and caretaker, while janitorial reflects the same Latin root.
Related word forms
How janitor is actually used
The word is neutral in modern English and is used in both American and British English. It can sound slightly old-fashioned in some settings, where “facilities manager” or “cleaning supervisor” may be preferred, but it remains common in schools, offices, hospitals, and residential buildings.
Easily confused with janitor
A janitor is generally responsible primarily for cleaning and routine building maintenance, whereas a caretaker may oversee the care of a property, grounds, or building on behalf of an owner or institution.
A cleaner focuses mainly on removing dirt and maintaining cleanliness, while a janitor's duties more often include the broader upkeep and routine maintenance of a building.