Uncertain Definition: The definition of uncertain is not definite or not confirmed. Synonyms: Fluctuating, Inconstant, Fitful, Irregular, Unreliable Antonyms: Reliable, Stable, Trustworthy, Unchangeable, Regular

Undertaking Definition: The definition of an undertaking is a task or an agreement to do something. Synonyms: Contract, Endeavor, Trade, Enterprise, Promise Antonyms: Irresponsibility, Refusal, Truancy, Escapade, Avoidance

Unfair Definition: Something that is not in accordance with justice or that is not kind or impartial. Synonyms: Unjust, Bigoted, Discriminatory, Unethical, Inequitable Antonyms: Fair, Just, Honest, Unprejudiced, Natural

Unite Definition: Unite is defined as to join or bring together. Synonyms: Combine, Amalgamate, Link, Meld, Ally Antonyms: Scatter, Disjoin, Break, Detach, Disunite

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