as likely as not

US /æz ˈlaɪkli æz nɑːt/
UK /æz ˈlaɪkli æz nɑːt/
"as likely as not" picture
1.

lo más probable es que, con toda probabilidad

very probable; almost certain

:
As likely as not, he'll be late again.
Lo más probable es que, llegue tarde de nuevo.
She'll as likely as not forget about the meeting.
Ella lo más probable es que olvide la reunión.