adjective B2 Upper-Intermediate Uncommon

untreated

Untreated (adjective) means not given medical care or a chemical process meant to fix, protect, or purify it. Example: “Left untreated, the infection can spread quickly.”

adjective

Not given medical care or a chemical process meant to fix, protect, or purify it.

"Left untreated, the infection can spread quickly."

"The wood was untreated and began to rot within a year."

How to use untreated

Learner’s notes

In plain EnglishNothing has been done to fix, cure, or process it yet.

Common pairings

left untreated untreated wound untreated water

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Fill the gap

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Left _____, the infection can spread quickly.

Etymology

From un- (\"not\") plus treated.

Antonyms

treated

Related words

treated processed

Rhymes for untreated

dated sated hated elated heated treated related bloated belated prorated agitated animated

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Frequently asked questions

What does “untreated” mean?

The word “untreated” means not given medical care or a chemical process meant to fix, protect, or purify it. In plain terms, nothing has been done to fix, cure, or process it yet.

How do you use “untreated” in a sentence?

Here is “untreated” used in a sentence: “Left untreated, the infection can spread quickly.”

What is the opposite of “untreated”?

The opposite of “untreated” — its antonyms — is treated.

What part of speech is “untreated”?

“Untreated” is an adjective.

Is “untreated” a common word?

“Untreated” is an uncommon word in modern English, usually learned at around the B2 level.

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