Which do you prefer? Do you consider one version wrong?<p>Is it a geographic preference?<p>I noticed the NY Times and other large publications use "adviser" and others strictly use "advisor".
Pick one and use it consistantly. If you're writing for someone else use their style guide.<p>(<a href="http://grammarist.com/spelling/adviser-advisor/" rel="nofollow">http://grammarist.com/spelling/adviser-advisor/</a>)<p>> <i>Adviser and advisor are both accepted spellings of the noun meaning one who advises or counsels. There is no difference between them. But adviser, the older version, is listed as the primary spelling in most dictionaries, and it is about five times as common as advisor in current news publications from throughout the English-speaking world.</i><p>> <i>In the U.S. and Canada, advisor is commonly used in official job titles, but adviser is still generally preferred over advisor in North America, and advisor is only marginally more common in American and Canadian English than in other varieties of English.</i><p>Did you know that there's an "English Language and Usage" stack exchange site? This question seems like an excellent fit for them, although I understand that they often reject such questions as off topic for a variety of odd reasons.<p>(<a href="http://english.stackexchange.com/" rel="nofollow">http://english.stackexchange.com/</a>)
I always go with <i>advisor</i> over adviser because, I believe that advisor looks "right" as you look at it whereas, adviser looks strange.<p>The statistics back this up as well specifically, the exact global searches in Google which are as follows:<p>Advisor - 74,000<p>Adviser - 33,100