Definition of CLEAN

CLEAN Adjective and Verb

Clean serves as both a adjective and a verb, encapsulating various meanings associated with purity, hygiene, and the removal of dirt or impurities. As an adjective, it denotes a state of cleanliness or the absence of dirt or contaminants. As a verb, it signifies the act of cleaning or removing dirt, stains, or impurities from surfaces, objects, or environments.

CLEAN as an adjective

In its adjective form, a clean represents a state or condition characterized by cleanliness, hygiene, or purity. It may refer to the absence of dirt, stains, or contaminants from surfaces, objects, or environments. A clean environment promotes health, well-being, and safety, reducing the risk of illness, infection, or contamination.

Cleanliness and Hygiene: Maintaining cleanliness is essential for promoting personal hygiene, preventing the spread of germs, and reducing the risk of disease transmission. Clean hands, surfaces, and environments help minimize the presence of harmful bacteria, viruses, and pathogens, protecting individuals and communities from illness and infection.

Cleaning Products and Practices: Various cleaning products and practices are used to achieve and maintain cleanliness in homes, workplaces, and public spaces. These may include detergents, disinfectants, sanitizers, brushes, mops, and vacuum cleaners, among others. Effective cleaning routines and protocols help remove dirt, grease, stains, and odors from surfaces, ensuring a clean and hygienic environment.

Environmental Cleanliness: Environmental cleanliness extends beyond personal spaces to encompass outdoor environments, public areas, and natural ecosystems. Pollution control measures, waste management practices, and conservation efforts aim to preserve and protect the cleanliness and integrity of air, water, and land resources, safeguarding ecological balance and biodiversity.

CLEAN as a verb

As a verb, to clean is to remove dirt, stains, or impurities from surfaces, objects, or environments through scrubbing, washing, or other cleaning methods. Cleaning activities may involve sweeping, mopping, dusting, vacuuming, or disinfecting to achieve a clean and sanitary condition.

Household Cleaning: Household cleaning involves regular maintenance and upkeep of living spaces to ensure cleanliness, comfort, and health. Cleaning chores may include tidying up rooms, wiping surfaces, laundering clothes, washing dishes, and sanitizing bathrooms and kitchens to maintain a clean and organized home environment.

Commercial and Industrial Cleaning: Commercial and industrial settings require specialized cleaning services and equipment to address larger spaces, higher traffic volumes, and specific hygiene standards. Professional cleaning companies offer services such as janitorial cleaning, carpet cleaning, floor maintenance, and specialized disinfection to ensure clean and safe environments for employees, customers, and visitors.

In conclusion, clean encompasses both adjective and verb forms, embodying the principles of hygiene, purity, and cleanliness in various contexts. Whether as a state of cleanliness, a personal hygiene practice, or a professional cleaning service, cleanliness plays a vital role in promoting health, safety, and well-being in homes, workplaces, and communities. Embracing effective cleaning practices and environmental stewardship is essential for maintaining clean and sustainable living environments that support the health and vitality of individuals and ecosystems alike.

Examples of CLEAN in a sentence

CLEAN as an adjective in a sentence

  • The kitchen was spotless, a testament to its clean surfaces and organized layout.
  • After a thorough scrubbing, the bathroom was gleaming and impeccably clean.
  • The hotel room had a fresh, clean scent, indicating meticulous housekeeping.
  • She admired her clean laundry, neatly folded and smelling of lavender.
  • His clean record made him an ideal candidate for the job.
  • The clean energy initiatives aimed to reduce reliance on fossil fuels and minimize environmental impact.
  • With a swift motion, he made a clean cut through the fabric, ensuring precise edges.
  • The company’s commitment to clean manufacturing practices earned it praise from environmental groups.

CLEAN as a verb in a sentence

  • She diligently cleaned the windows, removing any streaks or smudges.
  • After the party, they spent hours cleaning up the mess left behind by the guests.
  • The dishwasher efficiently cleaned the dishes, leaving them sparkling and sanitized.
  • He carefully cleaned his fishing gear after returning from a day on the lake.
  • The janitor meticulously cleaned the floors, ensuring every corner was free of dust and debris.
  • With a damp cloth, she cleaned the surface of the antique table, revealing its original shine.
  • The car wash thoroughly cleaned the vehicle, removing dirt and grime from every crevice.
  • They hired a professional service to clean the upholstery, restoring it to its former glory.

Origin of CLEAN

The word “clean” has a rich etymology that reflects its evolution over centuries. Here’s an overview:

  • Old English Roots: The word “clean” originated from Old English, where it was spelled “clǣne.” In Old English, it meant “free from dirt, filth, or impurities.” This Old English term had cognates in other Germanic languages, indicating its widespread usage in the Germanic linguistic family.
  • Proto-Germanic Origins: The Old English “clǣne” derived from the Proto-Germanic “*klainaz,” which also meant “clean” or “pure.” This root is thought to have Indo-European origins, with connections to similar words in other ancient languages.
  • Semantic Development: Over time, the meaning of “clean” expanded beyond its literal sense of physical cleanliness to encompass moral purity, innocence, and freedom from guilt or wrongdoing. This broader usage reflects the semantic development of the word as it adapted to different cultural and linguistic contexts.
  • Continued Usage in Middle English: The word “clean” transitioned into Middle English with relatively minor changes in spelling and pronunciation. It continued to be used with its original meanings of physical cleanliness and moral purity.
  • Modern Usage: In modern English, “clean” remains a versatile word with various applications. It is commonly used to describe the absence of dirt, stains, or impurities in both literal and metaphorical contexts. For example, “clean” can refer to a tidy living space, a spotless surface, or a clear conscience.

Overall, the etymology of “clean” demonstrates its journey from Old English through Proto-Germanic roots, retaining its core meaning of freedom from dirt or impurities while also acquiring broader metaphorical and symbolic connotations over time.


  • Pure
  • Spotless
  • Tidy
  • Neat
  • Pristine
  • Fresh
  • Sanitary
  • Hygienic


  • Dirty
  • Messy
  • Contaminated
  • Unclean
  • Filthy
  • Grimy
  • Polluted
  • Stained


  • Cleanliness
  • Cleansing
  • Purify
  • Hygiene
  • Sanitation
  • Sterile
  • Scrub
  • Detoxify

🌐 🇬🇧 CLEAN in other languages

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