for all someone knows

for all (one) knows

Said when one is uncertain or has limited details about something. I haven't talked to Marie in weeks, so, for all I know, she's not even coming to the dinner party tonight. Don't panic. For all Mom knows, we've been in our rooms all night. For all I know, she could be living in Timbuktu by now!

See also: all, for, know

Farlex Dictionary of Idioms. © 2024 Farlex, Inc, all rights reserved.

for all someone knows

COMMON You use for all someone knows to say that person does not know the facts of a situation. For all we know, he may even not be in this country. She's had a miserable time staying faithful to someone who for all she knows might not be coming back.

See also: all, for, know, someone

Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012

for all someone knows

used to express the limited scope or extent of someone's information.

See also: all, for, know, someone

Farlex Partner Idioms Dictionary © Farlex 2017