fact

1 the quality of being actual like other scientists, astronomers deal in the realm of fact, not speculation Synonyms actuality, factuality, materiality, reality Related Words authenticity, genuineness, truth, verity Near Antonyms fancy, fantasy (also phantasy), fiction, fictitiousness; dreaminess, surreality Antonyms irreality, unreality

2 something that actually exists once considered a wild fantasy, the Internet is now a fact of everyday life Synonyms actuality, case, materiality, reality Related Words certainty, inevitability; circumstance, event, occurrence, phenomenon; element, item, particular, thing Near Antonyms eventuality, possibility, potentiality, probability Antonyms fantasy (also phantasy), fiction, illusion

3 a single piece of information a book of little-known facts about famous people Synonyms datum, detail, nicety, particular, particularity, point, specific Related Words article, item; component, constituent, element, ingredient, member, part; aspect, circumstance, facet, factor; evidence, exhibit; database, information, knowledge Near Antonyms error, fallacy, falsehood, inaccuracy, misconception, misstatement, myth

4 facts pl  a collection of factual knowledge about something after reading the facts on the situation, the president concluded that an outbreak of hostilities was all but certain Synonyms data, factsRelated Words findings, intelligence