Antonyms of noun permanence

1 sense of permanence

Sense 1
permanence, permanency -- (the property of being able to exist for an indefinite duration)
       Antonym of impermanence (Sense 1)
      => impermanence, impermanency -- (the property of not existing for indefinitely long durations)

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

1 sense of permanence

Sense 1
permanence, permanency -- (the property of being able to exist for an indefinite duration)
       => duration, length -- (continuance in time; "the ceremony was of short duration"; "he complained about the length of time required")