Antonyms of adj accountable

1 sense of accountable

Sense 1
accountable -- (liable to account for one's actions; "governments must be accountable to someone beside themselves"; "fully accountable for what they did"; "the court held the parents answerable for their minor child's acts of vandalism"; "he was answerable to no one")

INDIRECT (VIA responsible) -> irresponsible -- (showing lack of care for consequences; "behaved like an irresponsible idiot"; "hasty and irresponsible action")

Similarity of adj accountable

1 sense of accountable

Sense 1
accountable -- (liable to account for one's actions; "governments must be accountable to someone beside themselves"; "fully accountable for what they did"; "the court held the parents answerable for their minor child's acts of vandalism"; "he was answerable to no one")
       => responsible (vs. irresponsible) -- (worthy of or requiring responsibility or trust; or held accountable; "a responsible adult"; "responsible journalism"; "a responsible position"; "the captain is responsible for the ship's safety"; "the cabinet is responsible to the parliament")