ten to one

US /tɛn tu wʌn/
UK /tɛn tu wʌn/
"ten to one" picture
1.

very likely; almost certainly

:
•
Ten to one, he'll be late as usual.
•
It's ten to one that the train will be delayed.
:
tenone-on-oneoneno oneonenessnine times out of tenwith one accord