inert
adjective
1. unable to move or resist motion
Similar word(s): nonmoving, unmoving
2. having only a limited ability to react chemically; chemically inactive
- inert matter
Similar word(s): unreactive, indifferent, neutral
3. slow and apathetic
- he was fat and inert
Similar word(s): inactive, faineant, indolent, lazy, otiose, slothful, sluggish, torpid
noun
1. (chemistry) A substance that does not react chemically.