assign responsibility or blame
impute - blame
To ‘impute’ means to attribute something to somebody or something. This formal word is typically seen in a negative context as it is generally used to assign blame rather than give credit, and it implies something unfair or dishonourable.
I think it’s extremely unfair to impute blame solely on Alex for what happened. We all made mistakes.
The insolvency of her business was imputable to the recession which hit last year.
The imputation that my promotion was due to my friendship with the boss greatly undermined my position.