Coldest (6)
'coldest' is the definition.
('icy' can be similar in meaning to 'cold')
This is the entire clue.
(Other definitions for iciest that I've seen before include "Most reserved" , "with minimal friendliness" , "Most cold and frosty" , "Most cold and frozen" , "Most slippery" .)
'coldest' is the definition.
('nippy' can be similar in meaning to 'cold')
This is the entire clue.
(Another definition for nippiest that I've seen is " most cold".)