Lethargic without an undergarment (9)
I believe the answer is:
shiftless
This could be a double definition.
'lethargic' is the first definition.
Both the definition and answer are adjectives. Maybe there's a link between them I don't understand?
'without an undergarment' is the second definition.
('undergarment' can be 'shift' (shift is a kind of undergarment) so maybe 'without an undergarment' can be ''shiftless')
Can you help me to learn more?
(Other definitions for shiftless that I've seen before include "Lazy - indolent" , "Like an automatic American car" , "lacking in initiative" , "Idle" .)