13-letter words containing b, u, r, i, a, l
- umbraculiform — umbrella-shaped
- umbrella bird — any of several large trogons of the genus Cephalopterus, of Central and South America, as C. ornatus, having an umbrellalike crest above the head.
- umbrella pine — a Japanese evergreen tree, Sciadopitys verticillata, having linear leaves growing in umbrellalike whorls, cultivated as an ornamental.
- unappreciable — sufficient to be readily perceived or estimated; considerable: There is an appreciable difference between socialism and communism.
- undeliverable — capable of delivery.
- undescribable — to tell or depict in written or spoken words; give an account of: He described the accident very carefully.
- undiscernable — capable of being discerned; distinguishable.
- unobliterated — to blot out or render undecipherable (writing, marks, etc.); efface.
- unperceivable — imperceptible
- unperceivably — imperceptibly
- unpolarizable — not capable of being polarized
- unpracticable — impracticable.
- unpredictable — not predictable; not to be foreseen or foretold: an unpredictable occurrence.
- unpredictably — not predictable; not to be foreseen or foretold: an unpredictable occurrence.
- unproblematic — not problematic, not causing difficulties or confusion; uncomplicated
- unreclaimable — not able to be reclaimed, reformed, or rescued from vice
- unreclaimably — in an unreclaimable manner
- unrectifiable — able to be rectified.
- unreliability — not reliable; not to be relied or depended on.
- unreprievable — not able to be reprieved, eased, or postponed
- unretrievable — to recover or regain: to retrieve the stray ball.
- unserviceable — not suitable to be used
- untarnishable — to dull the luster of (a metallic surface), especially by oxidation; discolor.
- unvitrifiable — not able to be vitrified
- unworkability — the quality or state of being unworkable
- upgradability — an incline going up in the direction of movement.
- visual binary — a binary star having components that are sufficiently separated to be resolved by a telescope.
- vulnerability — capable of or susceptible to being wounded or hurt, as by a weapon: a vulnerable part of the body.