1. (noun) a lack of competence

• inadequacy

2. (noun) lack of an adequate quantity or number

• deficiency
• inadequacy

1. (noun) a lack of competence

• failing
• weakness

2. (noun) (pathology) inability of a bodily part or organ to function normally

• inability
• unfitness

3. (noun) lack of an adequate quantity or number

• amount

1. (noun) (pathology) inability of a bodily part or organ to function normally

• cardiac insufficiency
• coronary insufficiency

2. (noun) lack of an adequate quantity or number

• deficit
• shortage
• shortfall
• exiguity
• leanness
• meagerness
• meagreness
• poorness
• scantiness
• scantness
• scarceness
• scarcity
• slenderness

1. (noun) (pathology) inability of a bodily part or organ to function normally

• pathology

1. (noun) lack of an adequate quantity or number

• adequacy
• adequacy
• sufficiency
• sufficiency

1. (noun) lack of an adequate quantity or number

• deficient
• lacking
• wanting
• deficient
• deficient
• insufficient
• insufficient