shortfall (n.)

• absence
• arrears
• beggary
• decline
• defalcation
• default
• defectiveness
• deficiency
• deficit
• delinquency
• deprivation
• destitution
• drought
• failure
• famine
• imperfection
• impoverishment
• inadequacy
• incompleteness
• inferiority
• insufficiency
• lack
• need
• omission
• shortage
• shortcoming
• slump
• starvation
• underage
• want