未済 is read as みさい (misai) and means executory.
みさい
misai
みけっさい
outstanding (account)
みめい
early dawn
みらい
(distant) future
みてい
not yet fixed
みせいねん
minor
みち
not yet known
みぜん
before it happens
まだ
(not) yet
みこん
unmarried
みばらい
unpaid
みかい
unbloomed (flower)
みかんせい
incomplete