know at a glance that (something is the case)
(redirected from knew at a glance that)know at a glance that (something is the case)
To understand or realize very quickly that something is the case, without the need for much evidence or careful consideration. The mechanic knew at a glance that the engine was beyond repair. My dad knew at a glance that we were lying about what happened.
know at a glance that...
to know [something] without much evidence; to know or understand something without a lot of observation. I knew at a glance that Bobbie was severely injured and had to be gotten to a hospital as soon as possible.