the quality of being able to meet a need satisfactorily: "he questioned the adequacy of the usual sentimental interpretation of the Golden Rule"
"She doubted the adequacy of his apology after he refused to take full responsibility for the accident."
the quality of being sufficient for the end in view
"he questioned the sufficiency of human intelligence"
The quality of being sufficient, adequate or able to meet the needs.
"The new software update improved the system's adequacy by ensuring it could handle all our daily data processing requirements without crashing."