Most unfavourable (5)
I believe the answer is:
worst
(Other definitions for worst that I've seen before include "Direst" , "Far from the best - defeat" , "the pits" , "Of the poorest quality" , "Best; least good" .)
I believe the answer is:
worst
(Other definitions for worst that I've seen before include "Direst" , "Far from the best - defeat" , "the pits" , "Of the poorest quality" , "Best; least good" .)