UNIMPROVED
Un`im*proved", a.
1. Not improved; not made better or wiser; not advanced in knowledge, manners, or excellence.
2. Not used; not employed; especially, not used or employed for a valuable purpose; as, unimproved opportunities; unimproved blessings. Cowper.
3. Not tilled, cultivated, or built upon; yielding no revenue; as, unimproved land or soil.
UNIMUSCULAR
U`ni*mus"cu*lar, a. Etym: [Uni- muscular.] (Zoöl.)
Defn: Having only one adductor muscle, and one muscular impression on each valve, as the oyster; monomyarian.
UNINCUMBERED
Un`in*cum"bered, a.
1. Not incumbered; not burdened.
2. (Law)
Defn: Free from any temporary estate or interest, or from mortgage, or other charge or debt; as, an estate unincumbered with dower.