Like some matches of old, carelessly ignited (8)
I believe the answer is:
floodlit
'like some matches of old carelessly ignited' is the definition.
I can't tell whether this defines the answer.
'of old carelessly ignited' is the wordplay.
'carelessly' indicates an anagram.
'ignited' becomes 'lit' (synonyms).
'of'+'old'='ofold'
'ofold' is an anagram of 'flood'.
'flood'+'lit'='FLOODLIT'
Can you help me to learn more?
(Other definitions for floodlit that I've seen before include "was intensely illuminating" , "Match may be" , "late-night play?" , "receiving enlightenment" , "powerfully illuminating" .)