Still at home -- finally leave for appointment (5)
I believe the answer is:
inert
'still' is the definition.
(not moving)
'home finally leave for appointment' is the wordplay.
'home' becomes 'in' ('he's home' can mean 'he's in').
'finally' says to take the final letters.
The last letters of 'leave for appointment' are 'ert'.
'in'+'ert'='INERT'
'at' is the link.
(Other definitions for inert that I've seen before include "Torpid" , "Leaden" , "Like some gases" , "Unreacting" , "Lifeless, without power to move or act" .)