13-letter words containing a, b, y, s, u
- substantially — of ample or considerable amount, quantity, size, etc.: a substantial sum of money.
- substantively — a noun.
- substantivity — the quality or state of being substantive
- subtropically — in the subtropics
- survivability — able to be survived: Would an atomic war be survivable?
- tautosyllabic — occurring within the same syllable: The (s) and (t) are tautosyllabic in the word disturb, but not in distaste.
- transboundary — something that indicates bounds or limits; a limiting or bounding line.
- treasury bill — an obligation of the U.S. government represented by promissory notes in denominations ranging from $1000 to $1,000,000, with a maturity of about 90 days but bearing no interest, and sold periodically at a discount on the market.
- treasury bond — any of various interest-bearing bonds issued by the U.S. Treasury Department, usually maturing over a long period of time.
- unambiguously — plainly, clearly
- unambitiously — in an unambitious manner
- unfashionably — in an unfashionable manner
- unforeseeably — to have prescience of; to know in advance; foreknow.
- ungainsayable — irrefutable
- unjustifiably — capable of being justified; that can be shown to be or can be defended as being just, right, or warranted; defensible: justifiable homicide.
- unpleasurably — without pleasure, in an unpleasurable manner
- unsaleability — inability to be sold
- unsuitability — the quality of being inappropriate, unsuitable, or unfit
- unsurpassably — in an unsurpassable manner; in a way that cannot be surpassed
- unsustainably — not sustainable; not to be supported, maintained, upheld, or corroborated.
- visual binary — a binary star having components that are sufficiently separated to be resolved by a telescope.
- x-ray burster — a celestial source from which bursts of x-rays are received.