| INTERLEUKIN | • interleukin n. (Biochemistry) Any of a group of cytokine proteins important in the regulation of lymphocyte function. • INTERLEUKIN n. any of a group of proteins that control the production of blood cells and play an important part in the combating of infection. |
| KERPLUNKING | • kerplunking v. Present participle of kerplunk. • KERPLUNK v. to drop with a heavy sound. |
| KNUCKLEBONE | • knucklebone n. A bone that forms a knuckle in the human hand, in an animal’s paw or any bone that forms a similar bump. • knucklebone n. Such a bone once used in knucklebones and other children’s games of chance. • knucklebone n. (Slang) A die. |
| LUCKENGOWAN | • LUCKENGOWAN n. (Scots) the globeflower. |
| LUCKPENNIES | • luck␣pennies n. Plural of luck penny. • LUCKPENNY n. a coin kept for luck. |
| SPELUNKINGS | • spelunkings n. Plural of spelunking. • SPELUNKING n. the sport of exploring caves. |
| UNBLINKERED | • unblinkered adj. (Not comparable, of a horse) Not wearing blinkers. • unblinkered adj. (Figuratively) Not blinkered; having full vision or awareness. |
| UNDRINKABLE | • undrinkable adj. Not drinkable. • undrinkable n. Anything not suitable for drinking. • UNDRINKABLE adj. unsuitable or unpleasant to drink. |
| UNKENNELING | • unkenneling v. Present participle of unkennel. • UNKENNEL v. to release from a kennel. |
| UNKENNELLED | • unkennelled adj. Alternative spelling of unkenneled. • unkennelled v. Simple past tense and past participle of unkennel. • UNKENNEL v. to release from a kennel. |
| UNKINDLIEST | • unkindliest adj. Superlative form of unkindly: most unkindly. • UNKINDLY adv. UNKIND, not kind. |
| UNKINGLIEST | • unkingliest adj. Superlative form of unkingly: most unkingly. • UNKINGLY adj. not kingly. |
| UNKNOWABLES | • unknowables n. Plural of unknowable. • UNKNOWABLE n. something that cannot be known. |
| UNLUCKINESS | • unluckiness n. The state, quality, or condition of being unlucky or unfortunate; misfortune. • UNLUCKINESS n. the state of being unlucky. |
| UNQUEENLIKE | • unqueenlike adj. Not queenlike. • UNQUEENLIKE adj. not like a queen. |
| UNSPRINKLED | • unsprinkled adj. Not having been sprinkled. • UNSPRINKLED adj. not sprinkled. |
| UNTHINKABLE | • unthinkable adj. Incapable of being believed; incredible. • unthinkable adj. Inconceivable or unimaginable; extremely improbable in a way that goes against common sense. • UNTHINKABLE adj. that cannot be thought. |