Bright and cold, take delight in getting up (6)
I believe the answer is:
clever
'bright' is the definition.
(thesaurus)
'cold take delight in getting up' is the wordplay.
'cold' becomes 'c' (eg on taps).
'take delight in' becomes 'lev' (I am not sure about this - if you are sure you should believe this answer much more).
'getting' becomes 're' (I've seen this in other clues).
'up' shows that the letters should be reversed in order (in down clue: letters go upwards).
're' backwards is 'er'.
'c'+'lev'+'er'='CLEVER'
'and' acts as a link.
Can you help me to learn more?
(Other definitions for clever that I've seen before include "Sharp and able" , "Gifted" , "Sharp-witted, intelligent" , "Smart or shrewd" , "expert" .)