unaccountable
unac·coun·table
adjective
1.
not to be accounted for or explained
- “perceptible only as unaccountable influences that hinder progress”
- “an unexplainable fear”
2.
free from control or responsibility
Origin
From un- + accountable.
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.