Un*ripe"ness, n. Quality or state of being unripe.
Un*ri"valed (?), a. Having no rival; without a competitor; peerless.
[Spelt also unrivalled.] Pope.
Un*riv"et (?), v. t. [1st pref. un- + rivet.] To take out, or loose,
the rivets of; as, to unrivet boiler plates.
Un*robe" (?), v. t. & i. [1st pref. un- + robe.] To disrobe; to
undress; to take off the robes.