13-letter words containing u, n, h, o
- unneighboured — having no neighbour or neighbours
- unneighbourly — unfriendly and unhelpful
- unreproachful — not deserving reproach or blame
- unreproaching — not reproaching or blaming
- unscholarlike — not befitting a scholar; ungentlemanly
- unsmotherable — unquenchable
- untheological — not theological; not of or pertaining to the nature of theology
- untheoretical — not theoretical; not belonging or pertaining to the realm of theory; not confined to the theoretical realm; (somewhat) concrete
- untrustworthy — deserving of trust or confidence; dependable; reliable: The treasurer was not entirely trustworthy.
- unupholstered — to provide (chairs, sofas, etc.) with coverings, cushions, stuffing, springs, etc.
- unwithholding — not withholding; giving freely
- upper chinook — a Chinookan language of the Columbia River valley from the Deschutes River to the estuary.
- upright piano — a piano with an upright rectangular body and with its strings running vertically. Compare spinet (def 1).
- ursine howler — the red howling monkey, Alouatta seniculus, of northern South America.
- vapourishness — the quality or state of being vapourish
- weather-bound — delayed or shut in by bad weather.
- whole numbers — Also called counting number. one of the positive integers or zero; any of the numbers (0, 1, 2, 3, …).
- witching hour — midnight: a rendezvous at the witching hour.
- within bounds — not beyond limits
- xanthochroous — light-skinned and fair-haired
- you know what — a thing or person that the speaker cannot or does not want to specify
- zhao kuangyin — Chao K'uang-yin.
- zinjanthropus — the genus to which Australopithecus boisei was formerly assigned.