The word apathy, and its adjective form apathetic are frequently used to describe situations where observers of an event lack the motivation to be involved.
Torpid is a more passive situation of lacking the ability to act, not by its own volition. Whereas, apathy implies an active choice to stay in a demotivated state and inaction.
ap·a·thet·ic (p-thtk) also ap·a·thet·i·cal (--kl)
adj.
- Feeling or showing a lack of interest or concern; indifferent.
- Feeling or showing little or no emotion; unresponsive.
[From apathy, on the model of pathetic.]
apa·theti·cal·ly adv.
The American Heritage® Dictionary of the English Language, Fourth Edition copyright ©2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
torpid (ˈtɔːpɪd)
adj
- apathetic, sluggish, or lethargic
- (Zoology) (of a hibernating animal) dormant; having greatly reduced metabolic activity
- unable to move or feel
[C17: from Latin torpidus, from torpēre to be numb, motionless]
torˈpidity n ˈtorpidly adv
Collins English Dictionary – Complete and Unabridged © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003