inert
‘without inherent force, having no power to act or respond’
Lexical development traced from the Tamil root:
F. inerte < Lat. inertem ‘unskilled, incompetent; inactive, helpless, weak, sluggish; worthless’ < in- ‘without, not, opposite of’ + artem ‘work of art; practical skill; a business, craft’ < ar(ə)-ti- < uht < ar-< Tamil ār