# spellServer(_:findMisspelledWordIn:language:wordCount:countOnly:) Asks the delegate to search for a misspelled word in a given string, using the specified language, and marking the first misspelled word found by returning its range within the string. ``` optional func spellServer(_ sender: NSSpellServer, findMisspelledWordIn stringToCheck: String, language: String, wordCount: UnsafeMutablePointer, countOnly: Bool) -> NSRange ``` ## Parameters `sender` The `NSSpellServer` object that sent this message. `stringToCheck` The string to search for the misspelled word. `language` The language to use for the search. `wordCount` On output, returns by reference the number of words from the beginning of the string object until the misspelled word (or the end of string). `countOnly` If , the method only counts the words in the string object and does not spell checking. ## Return Value The range of the misspelled word within the given string. ## Discussion Send [`isWord(inUserDictionaries:caseSensitive:)`](/documentation/Foundation/NSSpellServer/isWord(inUserDictionaries:caseSensitive:)) to the spelling server to determine if the word exists in the user’s language dictionaries. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)