unaccounted
adjective
uk/ˌʌnəˈkaʊntɪd/usunaccounted for
lostorunpaid, withoutexplanation:
Millions ofdollarsare still unaccounted for.
Much of thecostofenvironmentaldegradationgoes unaccounted for.
One woman whopreviouslyhad beenlistedas unaccounted for wasfoundatworkFridaymorning.
Compare
account for sth