Blue silver started radiating (5)
I believe the answer is:
aglow
'radiating' is the definition.
Both the definition and answer are adjectives. Perhaps they are linked in a way I don't understand?
'blue silver started' is the wordplay.
'blue' becomes 'low' (both can mean sad).
'silver' becomes 'Ag' (Ag is the chemical symbol for silver).
'started' means one lot of letters go next to another.
'low' put after 'ag' is 'AGLOW'.
Can you help me to learn more?
(Other definitions for aglow that I've seen before include "Smouldering" , "Gleaming" , "Illuminated" , "Lit up" , "Warm - shiny" .)