Definitions of unaccountable

1. Unaccountably.

2. Not accountable or responsible; free from control.

3. Not to be explained; strange.

4. Not accountable or to be accounted for: not responsible.

5. Not to be accounted for; inexplicable.

6. Impossible to be accounted for; extraordinary.

7. Not to be accounted for; not explicable; not responsible.