be not to know

be not to know

To not be able to know something in advance. We aren't to know the path that life will take us on. It was a surprise party for him, though! He wasn't to know! We're not to know how today's decisions will work out—and that drives me crazy!
See also: know, not, to
Farlex Dictionary of Idioms. © 2024 Farlex, Inc, all rights reserved.

be not to ˈknow

have no way of realizing or being aware that you have done something wrong: ‘I’m sorry I called when you were asleep.’ ‘Don’t worry — you weren’t to know.’
See also: know, not, to
Farlex Partner Idioms Dictionary © Farlex 2017
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