blameworthy, blamable, guilty, culpable mean deserving reproach or punishment. blameworthy and blamable apply to any degree of reprehensibility.
conduct adjudged blameworthy
an accident for which no one is blamableguilty implies responsibility for or consciousness of crime, sin, or, at the least, grave error or misdoing.
guilty of a breach of etiquetteculpable is weaker than guilty and is likely to connote malfeasance or errors of ignorance, omission, or negligence.