unauthorized
— Adjective
– English
~ not endowed with authority
unauthorized
— Adjective
– English
~ without official authorization; "an unauthorized strike"; "wildcat work stoppage"
unavailability
— Noun
– English
~ the quality of not being available when needed
unavailable
— Adjective
– English
~ not available or accessible or at hand; "fresh milk was unavailable during the emergency"; "his secretary said he was unavailable for comment"
unavailing
— Adjective
– English
~ producing no result or effect; "a futile effort"; "the therapy was ineffectual"; "an otiose undertaking"; "an unavailing attempt"
unavenged
— Adjective
– English
~ for which vengeance has not been taken; "an unavenged murder"
unavoidability
— Noun
– English
~ the quality of being impossible to avoid or evade
unavoidable casualty
— Noun
– English
~ a natural and unavoidable catastrophe that interrupts the expected course of events; "he discovered that his house was not insured against acts of God"