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HYPHEN
WORDNET DICTIONARY
OXFORD DICTIONARY
THESAURUS

WORDNET DICTIONARY

Noun shortfall has 1 sense

• shortfall(n = noun.attribute) deficit, shortage - the property of being an amount by which something is less than expected or required; "new blood vessels bud out from the already dilated vascular bed to make up the nutritional deficit"
is a kind of deficiency, inadequacy, insufficiency
has particulars: oxygen deficit

OXFORD DICTIONARY

THESAURUS

shortfall

absence, arrear, arrearage, arrears, beggary, decline, defalcation, default, defectiveness, deficiency, deficit, delinquency, deprivation, destitution, drought, failure, falling short, famine, imperfection, impoverishment, inadequacy, incompleteness, inferiority, insufficiency, lack, need, omission, short measure, shortage, shortcoming, slump, starvation, underage, want, wantage

For further exploring for "shortfall" in Webster Dictionary Online