inert

Meanings

1. 1
   adj

   Not moving or not able to move.

   He lay inert on the sofa, too tired to get up.

2. 2
   adj

   Slow, lazy, or lacking energy.

   The summer heat left the whole town feeling inert.

3. 3
   adj

   Not reacting chemically with other substances.

   Helium is an inert gas that does not burn.

From French inerte, from Latin iners (“inactive, inert”).

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