Antonyms of noun availability

1 sense of availability

Sense 1
handiness, accessibility, availability, availableness -- (the quality of being at hand when needed)
       Antonym of unavailability (Sense 1)
      => inaccessibility, unavailability -- (the quality of not being available when needed)

Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun availability

1 sense of availability

Sense 1
handiness, accessibility, availability, availableness -- (the quality of being at hand when needed)
       => convenience -- (the quality of being useful and convenient; "they offered the convenience of an installment plan")