- A person who gives advice in a particular field: the military adviser to the PresidentMore example sentences
- In the past he has been an adviser to the New Zealand and Russian Governments on pensions policy.
- An adviser to the Royal Mail has been involved in discussions with major banks.
- Strangely, he is the adviser to the transport department whose services the police use.
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.