12-letter words containing a, n, o, u
- unprocurable — obtainable.
- unprofitable — being without profit; not showing or turning a profit: a series of unprofitable ventures.
- unprogrammed — a plan of action to accomplish a specified end: a school lunch program.
- unreasonable — not reasonable or rational; acting at variance with or contrary to reason; not guided by reason or sound judgment; irrational: an unreasonable person.
- unreasonably — not reasonable or rational; acting at variance with or contrary to reason; not guided by reason or sound judgment; irrational: an unreasonable person.
- unreciprocal — given or felt by each toward the other; mutual: reciprocal respect.
- unreckonable — to count, compute, or calculate, as in number or amount.
- unrecordable — to set down in writing or the like, as for the purpose of preserving evidence.
- unrecoupable — to get back the equivalent of: to recoup one's losses by a lucky investment.
- unreformable — not able to be reformed or reclaimed
- unreportable — not able to be reported, relayed, or spoken of
- unreproached — not reproached, criticized, or scolded
- unreprovable — not able to be reproved, reproached, or criticized
- unresolvable — not able to be resolved or brought to a satisfactory resolution
- unrestorable — to bring back into existence, use, or the like; reestablish: to restore order.
- unrhetorical — not rhetorical; literal; plainspoken
- unroadworthy — not mechanically sound or suitable for use on the road
- unsailorlike — not befitting a sailor
- unsalubrious — favorable to or promoting health; healthful: salubrious air.
- unsanctioned — authoritative permission or approval, as for an action.
- unsaponified — to convert (a fat) into soap by treating with an alkali.
- unsaturation — not saturated; having the power to dissolve still more of a substance.
- unseasonable — not seasonable; being out of season; unseasonal: unseasonable weather.
- unseasonably — not seasonable; being out of season; unseasonal: unseasonable weather.
- unshadowable — not able to be shadowed
- unsocialized — to make social; make fit for life in companionship with others.
- unstationary — standing still; not moving.
- unsupposable — not able to be supposed
- unsyncopated — marked by syncopation: syncopated rhythm.
- unvoyageable — not able to be sailed or otherwise journeyed over; untraversable; innavigable
- up and about — to, toward, or in a more elevated position: to climb up to the top of a ladder.
- up and doing — busy; active
- up-and-comer — likely to succeed; bright and industrious: an up-and-coming young executive.
- uranic oxide — uranium dioxide.
- urban forest — the trees and plants within a city.
- urbanisation — the act or fact of urbanizing, or taking on the characteristics of a city: Urbanization has led to more air pollution and increasing childhood asthma.
- urbanization — the act or fact of urbanizing, or taking on the characteristics of a city: Urbanization has led to more air pollution and increasing childhood asthma.
- urbanologist — a sociologist specializing in urban life and problems
- urinogenital — genitourinary.
- vaginicolous — living in a sheath
- vainglorious — filled with or given to vainglory: a vainglorious actor.
- valve bounce — A valve bounce is the bouncing of a poppet valve on its seat when it is closing.
- vax document — A document preparation system from DEC.
- verbenaceous — belonging to the plant family Verbenaceae.
- verumontanum — an elevation in the wall of the urethra
- vesiculation — characterized by or covered with vesicles.
- villainously — having a cruel, wicked, malicious nature or character.
- vituperation — verbal abuse or castigation; violent denunciation or condemnation.
- vocabularian — a person who is particularly or overly attentive to words
- voluntaryism — voluntarism (def 2).