unaccountable

Definitions

Not required or expected to justify actions or decisions; not responsible.

Impossible to explain or account for; inexplicable.

Examples

The sudden change in his behavior remained entirely unaccountable to his colleagues.

She felt an unaccountable sense of dread as she walked through the empty hallway.

Synonyms

inexplicable baffling mysterious puzzling incomprehensible strange enigmatic

Antonyms

explicable understandable comprehensible logical reasonable accountable explainable