likely
adverb
ˈlaɪkli 
ˈlaɪkli Idioms
as likely as not
|most/very likely
very probably
As likely as not she's forgotten all about it.The illness was caused, most likely, by a virus.not likely!
(informal, especially British English) used to disagree strongly with a statement or suggestionMe? Join the army? Not likely!
Usage note: likelyIn standard British English the adverb likely must be used with a word such as most, more or very: We will most likely see him later. In informal North American English likely is often used on its own: We will likely see him later. ◇ He said that he would likely run for President.