Sluggish or lethargic.
Unable to move or act; inanimate.
In chemistry, not readily reacting with other elements or compounds.
Having no therapeutic action.
To fill with an inert gas to reduce the risk of explosion.
A substance that does not react chemically.
Not easily excited to action or passion; calm; sluggish.
Generating, causing, or full of phlegm.
One who has a phlegmatic disposition.