Question

Someone who is an a________ on a particular subject knows a lot about it.Someone who is an authority on a particular subject knows a lot about it.He's universally recognized as an authority on Russian affairs. nounThe authorities are the people who have the power to make decisions and to make sure that laws are obeyed .This provided a pretext for the authorities to cancel the elections.The prison authorities have been criticised for not ending the protest more quickly.An authority is an official organization or government department that has the power to make decisions....the Health Education Authority.Any alterations had to meet the approval of the local planning authority.Authority is the right to command and control other people.Local police chiefs should re-emerge as figures of authority and reassurance in their areas.The judge had no authority to order a second trial.If someone has authority, they have a quality which makes other people take notice of what they say .He had no natural authority and no capacity for imposing his will on others.Authority is official permission to do something.The police were given authority to arrest anyone suspected of subversive thoughts.Someone who is an authority on a particular subject knows a lot about it.He's universally recognized as an authority on Russian affairs. B1

Accepted Answer

authority authorities

query	Someone who is an a________ on a particular subject knows a lot about it.Someone who is an authority on a particular subject knows a lot about it. He's universally recognized as an authority on Russian affairs.
word	authority
full-definition	noun The authorities are the people who have the power to make decisions and to make sure that laws are obeyed . This provided a pretext for the authorities to cancel the elections. The prison authorities have been criticised for not ending the protest more quickly. An authority is an official organization or government department that has the power to make decisions. ...the Health Education Authority. Any alterations had to meet the approval of the local planning authority. Authority is the right to command and control other people. Local police chiefs should re-emerge as figures of authority and reassurance in their areas. The judge had no authority to order a second trial. If someone has authority, they have a quality which makes other people take notice of what they say . He had no natural authority and no capacity for imposing his will on others. Authority is official permission to do something. The police were given authority to arrest anyone suspected of subversive thoughts. Someone who is an authority on a particular subject knows a lot about it. He's universally recognized as an authority on Russian affairs.
inflections	authorities
cefr-level	B1

Authority Subject Lot Make Universally Recognized Russian Affairs