The spellings Adviser and Advisor are both fully acceptable, though your spellchecker may say otherwise. Most spellcheckers do not tolerate multiple spellings, but feel free to ignore them in this case.
It may help to know that there are reasons for these two spellings. One reason is that, in English, we can change almost any verb into a noun describing a person by adding -er; we can have eaters and drivers, watchers and talkers, etc. This is where adviser comes from (from the verb advise).
The English ending -er is spelled -or in Latin, so words which first received this ending long ago, such as advisor, may use the -or spelling. For example, we have negotiator, director, and mentor, because these are traditional words. But the more modern words driver, server, and programmer, end with -er.
You may also notice that the words ending in -or sound more official than the -er words. Some people feel this way about adviser and advisor, so they will say that it should be advisor when writing about government officials, but adviser when writing about a friend.
However, you can feel free to use either one in any context.
Examples of How to Use Adviser (Adivsor) in a Sentence
An adviser typically provides feedback or suggestions to someone who is less experienced or not fully knowledgeable about a topic or skill. Here are 10 example sentences that use this word with alternate spellings:
- It can be difficult to find someone who is both knowledgeable and trustworthy, but it is important to have a trusted adviser.
- There are many different types of advisors, including academic advisors, medical advisors and financial advisors.
- An adviser should be able to offer guidance and wisdom when needed.
- The manager consulted with her advisers before making the decision to lay off employees.
- Jane felt no need for an adviser on her life decisions because she was always decisive about what she wanted, for better and for worse.
- He was more than my adviser; he was my teacher.
- My financial adviser told me to invest in gold.
- His advisers are saying he should stay in office even though the polls suggest say he should resign.
- After disappointing its stockholders, the company brought in an adviser to help with its reorganization.
- Multi-talented and experienced, Ron routinely acted as a consultant and adviser on various projects.