noun

1. The condition of being weak.

   “In a small number of horses, muscle weakness may progress to paralysis.”

2. An inadequate quality; fault

   “His inability to speak in front of an audience was his weakness.”

3. A special fondness or desire.

   “She is an athlete who has a weakness for chocolate.”

Synonyms: frailty, powerlessness, vincibility, vulnerability, defect, fault, flaw, hole