inadequacy (n.)

• adulteration
• arrears
• asymmetry
• baseness
• blemish
• bug
• callowness
• catch
• contrariety
• crack
• decline
• defalcation
• default
• defect
• defection
• defectiveness
• deficiency
• deficit
• delinquency
• difference
• disability
• disablement
• disequilibrium
• disparity
• disproportion
• disqualification
• drawback
• erroneousness
• failing
• failure
• fallibility
• fault
• faultiness
• fewness
• flaw
• foible
• frailty
• heterogeneity
• hole
• imbalance
• imbecility
• immaturity
• impairment
• imperfection
• impurity
• inability
• inaccuracy
• inadequateness
• inadmissibility
• inaptitude
• inaptness
• inattentiveness
• incapability
• incapacity
• incompetence
• incompetency
• incompleteness
• ineffectiveness
• ineffectuality
• ineffectualness
• inefficacy
• inefficiency
• ineptitude
• ineptness
• inequality
• inequity
• inexactitude
• inexactness
• infancy
• inferiority
• infirmity
• injustice
• insufficiency
• irregularity
• kink
• lack
• littleness
• maladjustment
• maladroitness
• meanness
• mediocrity
• minority
• nonuniformity
• odds
• patchiness
• pettiness
• problem
• rift
• rustiness
• scantiness
• scrappiness
• shabbiness
• shortage
• shortcoming
• shortfall
• sketchiness
• slump
• smallness
• snag
• subnormality
• taint
• thoughtlessness
• triviality
• unacceptability
• unbalance
• underage
• underdevelopment
• undesirability
• unevenness
• unfitness
• unsatisfactoriness
• unskillfulness
• unsoundness
• unsuitability
• vulgarity
• want
• wardship
• weakness