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Synonyms

unreactive

British  
/ ˌʌnrɪˈæktɪv /

adjective

  1. (of a substance) not readily partaking in chemical reactions

"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

Example Sentences

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For the first time, they successfully separated the chiral forms of both pristane and phytane, despite the molecules being extremely unreactive.

From Science Daily ● Jul. 9, 2026

In addition to being lighter than air, helium is staunchly unreactive, making it useful for manufacturing sensitive products such as computer chips.

From Science Magazine ● Nov. 5, 2023

Atmospheric nitrogen consists of N2 molecules, which are very unreactive due to the strong nitrogen-nitrogen triple bond.

From Textbooks ● Feb. 14, 2019

It is also reasonably cheap, unreactive and easy to purify.

From Economist ● Jan. 11, 2018

UK-based Econic Technologies has invented a way of encouraging CO2 - a typically unreactive gas - to react with the petrochemical raw materials used in the making of many plastics.

From BBC ● Oct. 9, 2017

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