Like long odds (4)
I believe the answer is:
slim
'like long odds' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for slim that I've seen before include "Thin; WWtwo Burma commander" , "Elegantly thin or slender" , "Slender or slight" , "Gracefully thin" , "Take off weight as by dieting" .)