13-letter words containing r, a, t, o, u, i
- ultracautious — extremely or excessively cautious
- ultrarational — extremely rational
- ultraromantic — extremely romantic
- ultraroyalist — a supporter or adherent of a king or royal government, especially in times of rebellion or civil war.
- ultratropical — outside the tropics.
- ultraviolence — acts of extreme violence, esp those shown on television or film
- unappropriate — not appropriate or suitable
- uncategorical — without exceptions or conditions; absolute; unqualified and unconditional: a categorical denial.
- uncategorized — to arrange in categories or classes; classify.
- unchlorinated — not chlorinated; not treated with chlorine
- unconstrained — forced, compelled, or obliged: a constrained confession.
- uncooperating — to work or act together or jointly for a common purpose or benefit.
- uncooperative — working or acting together willingly for a common purpose or benefit.
- uncoordinated — of the same order or degree; equal in rank or importance.
- uncustomarily — according to or depending on custom; usual; habitual.
- underreaction — to react with less than the expected or appropriate emotion.
- undirectional — of, relating to, or indicating direction in space.
- undoctrinaire — a person who does not subscribe to a particular doctrine or theory; a free thinker
- unicorn plant — a North American plant, Proboscidea (Martynia) louisianica, having creamy-white to red flowers blotched with purple, and a woody capsule with a long, curved beak.
- uninformative — not educational
- unobliterated — to blot out or render undecipherable (writing, marks, etc.); efface.
- unoriginality — the quality or state of being original.
- unproblematic — not problematic, not causing difficulties or confusion; uncomplicated
- unprovocative — tending or serving to provoke; inciting, stimulating, irritating, or vexing.
- untheoretical — not theoretical; not belonging or pertaining to the realm of theory; not confined to the theoretical realm; (somewhat) concrete
- untraditional — of or relating to tradition.
- unvoluntarily — done, made, brought about, undertaken, etc., of one's own accord or by free choice: a voluntary contribution.
- unworkability — the quality or state of being unworkable
- upright piano — a piano with an upright rectangular body and with its strings running vertically. Compare spinet (def 1).
- uralitization — the change of a crystalline silicate mineral to amphibole (one of a group of structurally similar minerals including calcium, sodium and magnesium)
- uranite group — the mineralogical group including uranites and related minerals.
- vaunt-courier — a person who goes in advance, as a herald.
- ventriloquial — of, relating to, or using ventriloquism.
- vermiculation — to work or ornament with wavy lines or markings resembling the form or tracks of a worm.
- visual cortex — the portion of the cerebral cortex of the brain that receives and processes impulses from the optic nerves.
- voluntariness — done, made, brought about, undertaken, etc., of one's own accord or by free choice: a voluntary contribution.
- voluntaristic — Philosophy. any theory that regards will as the fundamental agency or principle, in metaphysics, epistemology, or psychology.
- vulgarization — to make vulgar or coarse; lower; debase: to vulgarize standards of behavior.
- without tears — presented so as to be easily assimilated
- zero altitude — the height at which the atmospheric pressure is 610.5Pa
- zinjanthropus — the genus to which Australopithecus boisei was formerly assigned.