Lacking bottle now, perhaps, like some capsules (8)
I believe the answer is:
unmanned
I believe this is a double definition.
'lacking bottle now perhaps' is the first definition.
(unman can mean to deprive of courage or 'bottle')
'like some capsules' is the second definition.
(as in an unmanned capsule vehicle)
(Other definitions for unmanned that I've seen before include "Weakened the courage of in male way" , "Not requiring a crew or staff" , "Lacking personnel" , "Lacking a crew" , "Needing no crew" .)