Serious and not drunk (5)
I believe the answer is:
sober
(Other definitions for sober that I've seen before include "Serious, thoughtful" , "Dignified and sombre in manner or character" , "Serious, dull" , "Temperate" , "Restrained, grave" .)
I believe the answer is:
sober
(Other definitions for sober that I've seen before include "Serious, thoughtful" , "Dignified and sombre in manner or character" , "Serious, dull" , "Temperate" , "Restrained, grave" .)