Universal Definition: The definition of universal is relating to or affecting all. Synonyms: All embracing, International, Complete, General, Whole

Unusual Definition: Something rare or out of the ordinary. Synonyms: Extraordinary, Remarkable, Peculiar, Uncommon, Exceptional Antonyms: Usual, Common, Hackneyed, Habitual, Commonplace

Uphold Definition: Uphold is defined as to support or defend, or to keep from sinking. Synonyms: Champion, Back, Support, Maintain, Defend Antonyms: Betray, Drop, Destroy, Demolish, Destruct

Upset Definition: Upset is defined as to disturb physically, mentally or emotionally. Synonyms: Disturb, Disorder, Spoil, Agitate, Dismay Antonyms: Soothe, Calm, Relieve, Relax

Urgent Definition: Something pressing or important, or something that requires immediate attention. Synonyms: Critical, Pressing, Important, Insistent, Imperative Antonyms: Minor, Inconsiderable, Unimportant, Trifling, Insignificant