The term 'BET ON' can be solved using the crossword solutions EXACTA (6 letters), BACK (4 letters), and RELY (4 letters). EXACTA is a type of bet in horse racing where the bettor must select the first two finishers in exact order. BACK is a term used to describe betting on a horse to win a race. RELY is a verb meaning to depend on or trust in something or someone. Therefore, the term 'BET ON' can be interpreted as placing a bet on a horse to win a race, trusting in the horse to come through.