a shortcoming

A failing short; a becoming deficient; failure; deficiency; imperfection; weakness; lapse; fault; infirmity; as, a mental failing.

a flaw or weak point; "he was quick to point out his wife's failings"

failure to reach a minimum required performance; "his failing the course led to his disqualification"

The act of becoming insolvent of bankrupt.

unable to meet financial obligations; "a failing business venture"

below acceptable in performance; "received failing grades"