Sedate, unadventurous (5)
I believe the answer is:
staid
I believe this clue is a double definition.
'sedate' is the first definition.
(I know that sedate can be written as staid)
'unadventurous' is the second definition.
(I've seen this before)
(Other definitions for staid that I've seen before include "Calm, respectable and unadventurous" , "Restrained (in character)" , "Conventional (character)" , "Sedate, sober" , "Unadventurous, dull" .)