inert

1 ENTRIES FOUND:
inert /ɪˈnɚt/ adjective
inert
/ɪˈnɚt/
adjective
Britannica Dictionary definition of INERT
2 
[more inert; most inert] : moving or acting very slowly
3 
chemistry : not able to affect other chemicals when in contact with them : not chemically reactive

— inertly

adverb