1. (n.) A moral weakness; a failing; a weak point\; a frailty.

2. (n.) The half of a sword blade or foil blade nearest the point; -- opposed to forte.

bad habit besetting sin blemish bug catch crack crotchet defect defection deficiency drawback eccentricity failing failure fault faute flaw frailty hang-up hole idiosyncrasy imperfection inadequacy infirmity kink little problem moral flaw peculiarity preoccupation problem quirk rift shortcoming snag something missing taint vice vulnerable place weak link weak point weak side weakness