13-letter words containing a, n, d, o, u, i
- superordinary — that is superior to the ordinary
- superordinate — of higher degree in condition or rank.
- tax deduction — an expenditure that is deducted from taxable income.
- trade council — a central council composed of local trade unions.
- un-negotiated — to deal or bargain with another or others, as in the preparation of a treaty or contract or in preliminaries to a business deal.
- unaccompanied — not accompanied; alone: The shipment arrived unaccompanied by an invoice.
- uncategorized — to arrange in categories or classes; classify.
- unchlorinated — not chlorinated; not treated with chlorine
- uncompanioned — not having a companion; unaccompanied
- 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.
- uncoordinated — of the same order or degree; equal in rank or importance.
- under pain of — physical suffering or distress, as due to injury, illness, etc.
- underreaction — to react with less than the expected or appropriate emotion.
- undiagnosable — unable to be diagnosed
- undirectional — of, relating to, or indicating direction in space.
- undiscouraged — to deprive of courage, hope, or confidence; dishearten; dispirit.
- 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
- unideological — not having, belonging to, or relating to any particular ideology or belief system
- unimpassioned — not filled with passion or affected by strong emotion
- 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.
- untraditional — of or relating to tradition.
- up-and-coming — likely to succeed; bright and industrious: an up-and-coming young executive.
- uranium oxide — any of the compounds of uranium and oxygen, as UO 2 , UO 3 , U 4 O 9 , or U 3 O 8 .
- wolffian duct — a duct, draining the mesonephros of the embryo, that becomes the vas deferens in males and vestigial in females.
- young ireland — a movement or party of Irish patriots in the 1840s who split with Daniel O'Connell because they favoured a more violent policy than that which he promoted