know at a glance that (something is the case)

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.
See also: glance, know, that
Farlex Dictionary of Idioms.

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.
See also: glance, know, that
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • know at a glance that
  • so much for
  • so much for (someone or something)
  • so much for sb/sth
  • dart
  • dart a glance at
  • dart a glance at (someone or something)
  • steal a glance (at someone or something)
  • steal a glance at
  • steal a glance/look