inertia
‘that property of matter by virtue of which it retains its state of rest or of uniform rectilinear motion’
Lexical development traced from the Tamil root:
Lat. inertia ‘unskillfulness,ignorance; inactivity, idleness’ < iners ‘unskilled, incompetent; inactive, helpless, weak, sluggish; worthless’ < iners < in- ‘without, not, opposite of’ + artem ‘work of art; practical skill; a business, craft’ < ar(ə)-ti- < uhs < ar < Tamil ār