be not to know
English edit
Verb edit
be not to know (third-person singular simple present is not to know, present participle being not to know, simple past was not to know, past participle been not to know)
- (especially in the past) To not have the required information.
- You weren't to know // You couldn't have known.
- How was I to know he wanted me to stay at home all day?
Further reading edit
- “be not to know” in Longman Dictionary of Contemporary English, Longman.
- “be not to know”, in OneLook Dictionary Search.