Lacking assurance about getting home safe (8)
I believe the answer is:
insecure
'lacking assurance about' is the definition.
I can't tell whether this definition defines the answer.
'home safe' is the wordplay.
'home' becomes 'in' ('he's home' can mean 'he's in').
'safe' becomes 'secure' (similar in meaning).
'in'+'secure'='INSECURE'
'getting' acts as a link.
Can you help me to learn more?
(Other definitions for insecure that I've seen before include "uncertain" , "Fearful, unsafe." , "Sinecure for those lacking in confidence" , "Not safe or confident in oneself" , "Timid" .)