as likely as not
US /æz ˈlaɪkli æz nɑːt/
UK /æz ˈlaɪkli æz nɑːt/

1.
على الأرجح, على الأغلب
very probable; almost certain
:
•
As likely as not, he'll be late again.
على الأرجح، سيتأخر مرة أخرى.
•
She'll as likely as not forget about the meeting.
على الأرجح ستنسى الاجتماع.