adj ·3 syllables ·Uncommon ·Advanced level

Definitions

Adjective

1. 1
   Not treated. not-comparable

   "The volume of the flame given out by the untreated wood was estimated at three times that given out by the best treated wood."

Adjective

1. 1
   (of a specimen for study under a microscope) not treated with a reagent or dye wordnet
2. 2
   not subjected to chemical or physical treatment wordnet
3. 3
   not given medical care or treatment wordnet

Synonyms

All synonyms

arrestedbackwardcoarsecrudeembryonicin embryo

Antonyms

All antonyms

treated

Example

More examples

"Tom's bladder burst due to untreated venereal disease."

Etymology

From un- + treated.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.