From Longman Dictionary of Contemporary Englishcommoncom‧mon1 /ˈkɒmən $ ˈkɑː-/ ●●●S1W1 adjective 🔊 🔊 1happening oftenCOMMON happening often and to many people or in many places opp rare 🔊 Heart disease is one of the commonest causes of death.common among 🔊 Bad dreams are fairly common among children.it’s common for somebody to do something 🔊 It’s common for new fathers to feel jealous of the baby. ► Don’t say ‘It is common that ... ’ Say ‘It is common for ... ’ 🔊 It is common for children to be afraid (NOT It is common that children are afraid) of the dark.► see thesaurus at normal2a lotexisting in large numbers opp rare 🔊 Daisies are very common flowers.3same/similar [usually before noun, no comparative]SAMEcommonaims, beliefs, ideas etc are shared by several people or groups 🔊 people working towards a common goal 🔊 countries that share a common languagecommon to 🔊 a theme that is common to all her novels4 →common ground5shared by everyone [no comparative]EVERYONE belonging to or shared by everyone in a societycommon to 🔊 These problems are common to all societies. 🔊 Joe was chosen as captain by common consent (=with everyone’s agreement).6 →common knowledge7 →the common good8 →common practice9ordinary [only before noun, no comparative]ORDINARYordinary and not special in any way 🔊 common salt 🔊 The 20th century was called the century of the common man (=ordinary people). 🔊 He insists that he is a revolutionary, not a common criminal.10 →common courtesy/decency/politeness11 →common or garden12 →make/find common cause (with/against somebody)13 →common touch14social class British English old-fashioned an offensiveword used for describing someone from a lowsocialclassTHESAURUScommon if something is common, there are a lot of themJones is a very common name in Great Britain.Foxes are common in the area.Personal computers are nearly as common in American homes as televisions.widespread happening in a lot of places or done by a lot of peopleRacism is much more widespread than people imagine.The report claimed that the problem of police brutality was widespread.the widespread availability of antibiotics commonplace [not before noun] especially written common in a particular place or time – used especially when saying that this seems surprising or unusualCrimes such as robbery are commonplace in big cities.Expensive foreign cars are commonplace in this Chicago suburb.prevalent formal common in a place or among a group of people – used especially about illnesses, problems, or ideasFlu is most prevalent during the winter months.Depression remains one of the most prevalent health disorders in the US.This belief is more prevalent among men than women.rife /raɪf/ [not before noun] very common – used about illnesses or problemsAIDS is rife in some parts of the world.ubiquitous /juːˈbɪkwɪtəs/ formal very common and seen in many different places – often used humorously in written descriptionsHe was carrying the ubiquitous MP3 player. In Britain, CCTV cameras are ubiquitous.something is everywhere especially spoken used when saying that you can see something a lot in many different placesImages of the dictator were everywhere.Microchips seem to be everywhere these days – even in washing machines.One of the first things you notice in Amsterdam are the bicycles – they’re everywhere.