Definition of adviser in English:


(also advisor)


  • A person who gives advice in a particular field.

    ‘the military adviser to the President’
    • ‘He continues to serve as a senior adviser to the Ministry of the Interior.’
    • ‘Presently, he has his hands full as an adviser to European Parliament on Guatanemo Bay.’
    • ‘An adviser to the Royal Mail has been involved in discussions with major banks.’
    • ‘I suggest your friend either contact a tax adviser to work out the liability or go directly to her own inspector of taxes.’
    • ‘He spent 30 years as an adviser to the Treasury, working closely with nine chancellors.’
    • ‘He had stepped down as an adviser to the board of Leeds United days earlier.’
    • ‘Strangely, he is the adviser to the transport department whose services the police use.’
    • ‘A leading adviser to the Chancellor of the Exchequer was due in Bradford today to talk to trade unionists.’
    • ‘He was the artistic adviser to the Queen, and he had certain proclivities, which they all had.’
    • ‘There is no way that the chief adviser to the president is going to be someone out on bail.’
    • ‘He is now a fellow at the American Enterprise Institute and an adviser to the Pentagon.’
    • ‘He runs an engraving business in Halifax and is an adviser to Halifax Rugby League Football Club.’
    • ‘She was phoned back not by the MP, but by a special adviser to the secretary of state.’
    • ‘His wide experience has made him a top adviser to the Home Office and the police.’
    • ‘In the past he has been an adviser to the New Zealand and Russian Governments on pensions policy.’
    • ‘He was a specialist adviser to the malaria consortium programme to promote malaria control strategies.’
    • ‘He's since gone on to chronicle his experiences in a book, and of course act as advisor in the movie.’
    • ‘The former chartered accountant has also been an adviser to the Scottish Executive.’
    • ‘At the moment I am an adviser to the Minister of the Interior, but I will be quitting soon.’
    • ‘He also acted as an adviser to doctors involved in partnership disputes.’
    • ‘Picture my surprise when I read the suggestion that he could have been a health adviser to the Blair government.’
    counsellor, mentor, guide, consultant, consultee, confidant, confidante, right hand man, right hand woman, aide, helper
    instructor, coach, trainer, teacher, tutor, guru
    main man
    dutch uncle
    View synonyms


The spellings adviser and advisor are both correct. Adviser is more common, but advisor is also widely used, especially in North America. Adviser may be seen as less formal, while advisor often suggests an official position