Entry 3 senses · 2 variants Webster, 1913 Foible /foib'-əl/ · Foi·ble · IPA /ˈfɔɪbəl/ a. n. 01 a. Weak; feeble. 1. Weak; feeble.[Obs.] 02 n. A moral weakness; a failing; a weak point; a frailty. 1. A moral weakness; a failing; a weak point; a frailty. “A disposition radically noble and generous, clouded and overshadowed by superficial foibles.” — De Quincey. 2. The half of a sword blade or foil blade nearest the point; -- opposed to forte. Syn. Fault; imperfection; failing; weakness; infirmity; frailty; defect. See Fault.