Unlikeliness
/ʌnˈlaɪklinəs/
Definition 1 of 1
Pro Tip 1/3Context Matters
Use 'unlikeliness' when something has a low chance of happening, especially in formal or academic discussions. 
The unlikeliness of a snowstorm in July made it a poor research subject.
Pro Tip 2/3Not Impossible
'Unlikeliness' implies a possibility, though small, rather than something that can't happen at all. 
Despite the unlikeliness of winning the lottery, many people still buy tickets.
Pro Tip 3/3Negative Connotation
The term often suggests a skeptical or negative view of the potential for something to occur. 
The coach mentioned the unlikeliness of the team advancing, given their record.