Synonyms of the word

unaccountable

• adj. inexplicable; unable to account for, or explain.
• adj. not responsible; free from accountability or control.

incomprehensible

• adj. Impossible or very difficult to understand.

inexplicable

• adj. Impossible to explain; not easily accounted for.

irresponsible

• adj. Lacking a sense of responsibility; incapable of or not chargeable with responsibility; unable to respond…
• adj. Not responsible; not subject to responsibility; not to be held accountable, or called into question.
• n. Someone who is not responsible.

unexplainable

• adj. That cannot be explained; inexplicable.