Left info about one chap being careless (9)
I believe the answer is:
negligent
'careless' is the definition.
(associated in meaning)
'left info about one chap' is the wordplay.
I cannot quite understand how this works, but
'left' could be 'l' (common abbreviation) and 'l' is found in the answer.
'info' could be 'gen' (informal term for information) and 'gen' is present in the answer.
'one' could be 'i' (Roman numeral) and 'i' is found within the answer.
This may be the basis of the clue (or it may be nonsense).
'being' is the link.
Can you help me to learn more?
(Other definitions for negligent that I've seen before include "Lax" , "Not taking due care" , "sloppy" , "Failing to take due care" , "Careless of duties" .)