common knowledge

something which is known by everyone

Noun
1. something generally known to everyone
(hypernym) public knowledge, general knowledge
(hyponym) ancient history

Synonyms and related words:
PR, accessible, affirmed, announced, ballyhoo, blurb, bright light, broadcast, brought to notice, celebrity, circulated, common property, cry, currency, current, daylight, declared, diffused, disseminated, distributed, eclat, exposure, fame, famousness, glare, hoopla, hue and cry, in circulation, in print, limelight, made public, maximum dissemination, notoriety, open, plug, press notice, proclaimed, propagated, public, public eye, public knowledge, public relations, public report, publicity, publicity story, publicness, published, puff, reclame, report, reported, spotlight, spread, stated, telecast, televised, write-up