Search Result for "unavailability": 
Wordnet 3.0

NOUN (1)

1. the quality of not being available when needed;
[syn: inaccessibility, unavailability]


WordNet (r) 3.0 (2006):

unavailability n 1: the quality of not being available when needed [syn: inaccessibility, unavailability] [ant: accessibility, availability, availableness, handiness]