Be to blame
Meaning: to be the reason for something that happens, to be responsible for a mistake / something wrong
Example: The hot weather is partly to blame for the water shortage. Who is to blame for this awful mistake? Tom is to blame for this mix-up.
See also: put the blame on
Example: The hot weather is partly to blame for the water shortage. Who is to blame for this awful mistake? Tom is to blame for this mix-up.
See also: put the blame on