Is this your crossword clue?
"adequacy" is also used as a crossword clue. If that's what you saw, the answer is often sufficiency (11 letters).
Definitions
The quality of being able to meet a need satisfactorily
Word origin
From adequate + -cy.
Used in a sentence
“His zeal is, of course, unquestionable; his adequacy, however, I doubt.”
“GREETINGS, adventurer! In honor of your adequacy, I bring you a gift from the Dunmer people!”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer2 curated clues
01“Enoughness”8 letters
02“Sufficiency”8 letters
Not quite right?
"Search similar patterns."
A_______