Stiff, as a drink (6)
I believe the answer is:
strong
(Other definitions for strong that I've seen before include "muscular or concentrated" , "Not faint or feeble" , "Intense" , "Resilient" , "Robust and muscular" .)
I believe the answer is:
strong
(Other definitions for strong that I've seen before include "muscular or concentrated" , "Not faint or feeble" , "Intense" , "Resilient" , "Robust and muscular" .)