Choose the word that is incorrectly spelled.

The spelling "Accomodate" is incorrect because the correct spelling of the word is "Accommodate" with two 'c's and two 'm's. This word means to provide lodging or to make adjustments to help someone. It is common to mistakenly spell it with only one 'c' due to its pronunciation, but recognizing the correct spelling is essential for clear communication. This error often occurs given the complexity of English spelling rules, particularly with words that have double letters. The other words listed are spelled correctly: "Necessary," "Receive," and "Definitely" all adhere to their standard English spelling.