Synonyms of untreated

untreated

adjective

ˌən-ˈtrē-təd 

as in crude

being such as found in nature and not altered by processing or refining

untreated wool

Synonyms & Similar Words

• crude
• unprocessed
• natural
• raw
• native
• unrefined
• undressed
• in the raw
• undeveloped
• in the rough
• unfinished
• rude
• uncooked
• unpolished
• impure
• unfiltered
• semifinished
• rough-hewn

Antonyms & Near Antonyms

• treated
• dressed
• processed
• refined
• pure
• purified
• filtered

Example Sentences

Recent Examples of untreated

These rodents also performed better on standard memory tests than their untreated counterparts, even though both groups had similar levels of tau. — Amanda Erickson, STAT, 29 Sep. 2026

This controversial bill will cause 15 million Americans to lose their insurance coverage and eventually result in 50,000 additional deaths a year as many manageable conditions are left untreated. — Dr. Michael Good, Hartford Courant, 28 Sep. 2026

The microscopic structures increased the surface area available for lithium deposition to around four times that of untreated flat copper foil. — Atharva Gosavi, Interesting Engineering, 22 Sep. 2026

Left untreated, severe dengue can kill up to 10% of patients. — Andrés Henao, CNN Money, 21 Sep. 2026