the quality or state of being frail.

moral weakness; liability to yield to temptation.

a fault resulting from moral weakness

frailties of the human flesh.

noun

firmness , strength

noun

achilles heel * , blemish , daintiness , debility , decrepitude , defect , deficiency , delicacy , error , failing , fallibility , fault , feebleness , flimsiness , foible , foil , imperfection , infirmity , peccability , peccadillo , shortcoming , solecism , suscept , weak point , delicateness , fragileness , fragility , frailness , insubstantiality , puniness , unsoundness , unsubstantiality , weakliness , weakness , brittleness , delicate , flaw , frangibility , susceptibility , tenuity , tenuousness , vice