Definition

Adjective 1. Having undergone a process or action: Describes something that has been subjected to a specific process, often to change, improve, or preserve its properties. 2. Having received medical care: Describes a person, condition, or illness that has received medical attention or intervention. 3. Made resistant or durable through processing: Describes a material that has been processed to enhance its properties, such as resistance to decay, water, or wrinkles.

Usage and Examples

• Referring to processed materials:
  • The deck was built with treated lumber to prevent rot.
  • This fabric is stain-treated and very easy to clean.
• Referring to medical care:
  • The treated wound healed much faster than the untreated one.
  • A properly treated infection should not return.
• Referring to a subjected process:
  • The treated water is now safe for drinking.
  • Chemically treated surfaces repel dust.

Advanced Usage

• "treated as": Considered or regarded in a specified way.
  • In this household, pets are treated as members of the family.
• "treated with": Handled or dealt with using a specific method, substance, or attitude.
  • The wood was treated with a preservative.
  • She expects to be treated with respect.

Variants and Related Words

• Treat (verb): To behave toward or deal with in a certain way; to give medical care; to subject to a process.
• Treatment (noun): The manner of dealing with someone or something; medical care; the application of a process.
• Untreated (adjective): Not having received treatment; not processed.

Synonyms

• Processed: Subjected to a special treatment or operation.
• Medicated: Treated with a medicinal substance.
• Cured: Relieved of a disease or condition through treatment; preserved (e.g., meat).
• Conditioned: Improved or adapted by a treatment process.

Antonyms

• Untreated: Not given medical care; not subjected to a process.
• Raw: In a natural state; not processed.
• Natural: Existing in or derived from nature; not artificial or processed.

Related Phrases

• Well-treated / Badly-treated: Describes the quality of how someone or something was dealt with.
  • The refugees were well-treated by the host country.
  • A badly-treated piece of leather will crack.
• Treat oneself: To do something special and enjoyable for oneself.
  • After the exam, I'm going to treat myself to a nice dinner. (Note: This uses the verb form 'treat').

Adjective

1. made hard or flexible or resilient especially by heat treatment
   • a sword of tempered steel
   • tempered glass
2. given medical care or treatment; if left untreated it lasts two weeks"
   • a treated cold is usually gone in 14 days
3. subjected to a physical (or chemical) treatment or action or agent
   • the sludge of treated sewage can be used as fertilizer
   • treated timbers resist rot
   • treated fabrics resist wrinkling