Bet from jerk never missing odds (6)
I believe the answer is:
yankee
'bet' is the definition.
(I've seen this before)
'jerk never missing odds' is the wordplay.
'jerk' becomes 'yank' (synonyms).
'never missing odds' becomes 'ee' (I can't justify this - if you can you should give a lot more credence to this answer).
'yank'+'ee'='YANKEE'
'from' acts as a link.
Can you help me to learn more?
(Other definitions for yankee that I've seen before include "Signals code for Y" , "One that is dragged" , "A bet; US Federal soldier" , "Y in radio alphabet" , "Northern soldier in the American Civil War" .)