13-letter words containing a, b, u, y
- unreclaimably — in an unreclaimable manner
- unrecoverably — in an unrecoverable or irrecoverable manner
- unregrettably — causing or deserving regret; unfortunate; deplorable.
- unreliability — not reliable; not to be relied or depended on.
- 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.
- 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.
- x-ray burster — a celestial source from which bursts of x-rays are received.
- yekaterinburg — Ekaterinburg.