culpar
/kulˈpaɾ/ · A2 · verb
to blame
👉 culpar → culprit, culpable: same Latin culpa (fault)
From Latin culpa, meaning fault or guilt. English kept it in culprit, culpable and mea culpa (my fault). Culpar is simply the verb form: to put the culpa on someone, i.e. to blame them.