Culpable is being deserving of blame. If you are culpable of a crime, you are the culprit, or the one who did it. Culpable can be used when looking for the root of the problem rather than a simple who done it.

What is the meaning of culpable '?

1 : meriting condemnation or blame especially as wrong or harmful culpable negligence The defendant is culpable for her actions. 2 archaic : guilty, criminal.

Is it culpable of or culpable for?

Culpable means deserving blame for a crime or wrongdoing. When someone is described as culpable for something, it means it's their fault or that they are guilty of it.