To tempt fate American British informal
To do something that is risky or unsafe without knowing whether the outcome would be good or bad
Think twice. You're tempting fate by choosing to dive at this depth.
Peter is really tempting fate by driving a car without a license in the city.
I don't want to tempt fate by taunting my neighbor's dog, because it has the potential to bite me in any event.
The verb "tempt" should be conjugated according to its tense.
This expression uses "tempt" in the sense of “test in a way that involves risk or danger.” Earlier idioms with a similar meaning were "tempt God" dating from the 1300s, and "tempt fortune" first recorded in 1603, with "fate" appearing about 1700.