Lacking initiative or strength of character; irresponsible. The feckless manager failed to address the ongoing issues in the department.
Ineffective or incapable of producing a desired result; futile. Their feckless attempts at negotiation only worsened the conflict.
Archaic, chiefly Scots: feeble, weak, or having no worth; valueless. The clan discarded the feckless shield that cracked at the first blow.