13-letter words containing a, n, t, i, u, o
- 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
- uncomplaisant — not eager to please; not compliant or obliging
- uncomplicated — to make complex, intricate, involved, or difficult: His recovery from the operation was complicated by an allergic reaction.
- unconditional — not limited by conditions; absolute: an unconditional promise.
- unconstrained — forced, compelled, or obliged: a constrained confession.
- uncontainable — to hold or include within its volume or area: This glass contains water. This paddock contains our best horses.
- 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.
- undissociated — not dissociated, especially into ions or into simpler molecules.
- undoctrinaire — a person who does not subscribe to a particular doctrine or theory; a free thinker
- undomesticate — to make wild
- undulationist — a subscriber to the theory that light is transmitted as waves
- unemotionally — without the expression of strong feeling
- unexceptional — not exceptional; not unusual or extraordinary.
- 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
- unintentional — not intentional or deliberate: an unintentional omission from the list.
- union catalog — a library catalog combining the catalogs of several different libraries or different divisions of one library
- unmentionable — not mentionable; inappropriate, unfit, or improper for mention, as in polite conversation; unspeakable.
- unmetabolised — not metabolised
- unmetabolized — not metabolized
- unobliterated — to blot out or render undecipherable (writing, marks, etc.); efface.
- unopinionated — obstinate or conceited with regard to the merit of one's own opinions; conceitedly dogmatic.
- 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.
- unsensational — not sensational
- untheological — not theological; not of or pertaining to the nature of theology
- 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
- up to a point — If you say that something is true up to a point, you mean that it is partly but not completely true.
- 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.
- ustilagineous — belonging to the Ustilaginales, an order of fungi that cause plant disease
- vacuolization — the state of being full of vacuoles
- vasostimulant — stimulating the action of the vasomotor nerves.
- 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.
- visualization — to recall or form mental images or pictures.