to lack (infinitive passing into an adjectival phr.): to blame, blameworthy. Obsolete.

†(a) That has committed a fault, error, or offence; guilty of wrongdoing. Obsolete. (b) That is in fault or to blame (for some undesirable results).

Worthy to be blamed; giving cause for fault-finding or reproach; faulty, culpable; reprehensible.

Worthy or deserving of blame, culpable.

Fully meriting blame; blameworthy; guilty.

Able to be accused; open to an accusation (of); blameworthy, reprehensible.

Blameworthy.

Deserving of blame, blameworthy, culpable.

Bringing demerit, ill-deserving, blameworthy; opposed to meritorious.

Deserving blame or censure, blameworthy.

Open to punishment or censure; guilty, blameworthy, reprehensible. Obsolete.

Liable to a charge or accusation; chargeable (with some fault); censurable, blamable, reprehensible. Obsolete.