| MOUNTENAUNCES | • MOUNTENAUNCE n. (Spenser) amount; distance, also MOUNTENANCE. |
| NANOSTRUCTURE | • nanostructure n. Any manufactured or natural structure having a scale between molecular and microscopic. |
| NOTOUNGULATES | • notoungulates n. Plural of notoungulate. • NOTOUNGULATE n. any one of an extinct group of herbivorous, hoofed mammals common in South America between the Palaeocene and Pleistocene eras, also NOTUNGULATE. |
| SUBLIEUTENANT | • sublieutenant n. Alternative form of sub-lieutenant. • sub-lieutenant n. (Military, navy) A commissioned officer of the navy whose rank is immediately below that of a lieutenant. • SUBLIEUTENANT n. a commissioned officer in the British navy ranking immediately below lieutenant. |
| SUPERABUNDANT | • superabundant adj. Extremely or exceedingly abundant. • superabundant adj. (Number theory) Being or relating to a superabundant number. • SUPERABUNDANT adj. more than ample. |
| SUPERANNUATED | • superannuated adj. Obsolete, antiquated. • superannuated adj. Retired or discarded due to age. • superannuated v. Simple past tense and past participle of superannuate. |
| SUPERANNUATES | • superannuates v. Third-person singular simple present indicative form of superannuate. • SUPERANNUATE v. to render antiquated or obsolete. |
| UNADVENTUROUS | • unadventurous adj. Not adventurous. • UNADVENTUROUS adj. not adventurous, also UNADVENTROUS. |
| UNCONSUMMATED | • unconsummated adj. Not consummated. • UNCONSUMMATED adj. not consummated. |
| UNDAUNTEDNESS | • undauntedness n. The state or condition of being undaunted. • UNDAUNTEDNESS n. the state of being undaunted. |
| UNNATURALISED | • unnaturalised adj. Alternative spelling of unnaturalized. • UNNATURALISE v. to undo the naturalisation of, also UNNATURALIZE. |
| UNNATURALISES | • unnaturalises v. Third-person singular simple present indicative form of unnaturalise. • UNNATURALISE v. to undo the naturalisation of, also UNNATURALIZE. |
| UNNATURALIZES | • unnaturalizes v. Third-person singular simple present indicative form of unnaturalize. • UNNATURALIZE v. to undo the naturalisation of, also UNNATURALISE. |
| UNNATURALNESS | • unnaturalness n. The state of being unnatural. • UNNATURALNESS n. the state of being unnatural. |
| UNRETURNABLES | Sorry, definition not available. |
| UNSTAUNCHABLE | • unstaunchable adj. Incapable of being staunched, unstoppable. • UNSTAUNCHABLE adj. not staunchable. |
| UNSUSTAINABLE | • unsustainable adj. Not sustainable. • UNSUSTAINABLE adj. not sustainable. |
| UNTACTFULNESS | • untactfulness n. The quality of being untactful; absence of tact. |
| UNTUNABLENESS | • untunableness n. (Now rare) The quality of not being tuneful. • UNTUNABLENESS n. the state of being untunable. |
| VERUMONTANUMS | • VERUMONTANUM n. a ridge on the male urethra where the duct conveying prostatic fluid, sperm and other fluids enters it. |