FOIBLE
foible
(noun) the weaker part of a sword’s blade from the forte to the tip
idiosyncrasy, foible, mannerism
(noun) a behavioral attribute that is distinctive and peculiar to an individual
Source: WordNet® 3.1
Etymology
Adjective
foible (comparative more foible, superlative most foible)
(obsolete) Weak; feeble.
Noun
foible (plural foibles)
A quirk, idiosyncrasy, or mannerism; unusual habit or way (usage is typically plural), that is slightly strange or silly.
A weakness or failing of character.
(fencing) Part of a sword between the middle and the point, weaker than the forte.
Synonyms
• (a weakness or failing of character): fault
Source: Wiktionary
Foi"ble, a. Etym: [OF. foible. See Feeble.]
Definition: Weak; feeble. [Obs.] Lord Herbert.
Foi"ble, n.
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. [Written also faible.]
Syn.
– Fault; imperfection; failing; weakness; infirmity; frailty;
defect. See Fault.
Source: Webster’s Unabridged Dictionary 1913 Edition