Adjective unaccountable has 2 senses
  1. unaccountable, unexplainable - not to be accounted for or explained; "perceptible only as unaccountable influences that hinder progress"; "an unexplainable fear"
    Antonym: explicable (indirect, via inexplicable)
  2. unaccountable - free from control or responsibility
    Antonym:
    responsible (indirect, via irresponsible)
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