Dictionary.com
Thesaurus.com
Synonyms

nontoxic

British  
/ nɒnˈtɒksɪk /

adjective

  1. not of, relating to, or caused by a toxin or poison

    safe, nontoxic paint

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Explanation

Nontoxic things aren't poisonous. It's generally safe to eat or breathe nontoxic substances, and they don't harm the environment. It's a good thing if the ingredients in your dish soap are nontoxic — it means the suds washing down the drain won't be harmful to the environment, and the residue left on your dishes won't hurt you, either. You can use the adjective nontoxic to distinguish something from its more dangerous, toxic variation. Toxic waste poisons the groundwater or makes nearby animals sick, but nontoxic waste tends to break down without any negative consequences.

Keep Reading on Vocabulary.com

Vocabulary lists containing nontoxic

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Also in the home is a private gym, a sauna, nontoxic finishes, and a whole-house water filtration system, all tapping into wellness.

From MarketWatch • Dec. 31, 2025

Ceramic nonstick cookware: A popular new class of nonstick cookware, these candy-colored ceramic pans — such as the Instagram-famous Always Pan — are often marketed as nontoxic.

From Salon • Dec. 9, 2024

The splintered fluorine atoms, the researchers report, are safely sequestered by reacting them with potassium hydride in solution to form potassium fluoride, a nontoxic ingredient in toothpaste.

From Science Magazine • Nov. 20, 2024

UC Riverside scientists have discovered a highly effective, nontoxic, and less expensive way to lure hungry termites to their doom.

From Science Daily • May 31, 2024

I had no hair to wash, because the shower also dispensed a nontoxic hair-removing solution that I rubbed all over my face and body.

From "Ready Player One: A Novel" by Ernest Cline

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "nontoxic" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com