Neat and honest (8)
I believe the answer is:
straight
This clue is a double definition.
'neat' is the first definition.
(I know that neat can be written as straight)
'honest' is the second definition.
(similar in meaning)
'and' acts as a link.
(Other definitions for straight that I've seen before include "In a direct line" , "not gay" , "Respectable" , "Poker hand of five consecutive cards" , "square" .)