without fail
Certainly; by all means; as a matter of importance.
You will report to the police every week without fail.
ADV
dismally, miserably
The team's attempt to win the championship failed dismally after they lost every game in the final round.
spectacularly
The company's new product launch failed spectacularly when nobody wanted to buy it.
VERB + FAIL
cannot/could not, can/could hardly
She could hardly fail to notice the bright red car parked outside her house.
be bound to, be destined to, be doomed to
Without proper planning, that project was bound to fail within the first month.
PREP
in
The company failed in its responsibility to protect customer information from hackers.
ADV
totally
My first attempt at baking a cake totally failed, so I ordered one instead.