You can change the automatic checking here. Select the preferences for Spelling and Grammar. Open Word Preferences via the menu Word-Preferences. To modify your Grammar and Spell Checker defaults: 1. Download Grammarly for Microsoft Word on Mac or Windows and write better, clearer documents. One of the annoying features of the system-wide spell check on Mac's is the fact you have to grab your mouse, right-click the word, and then click again to select the word. Show or hide spell checking’s red underlines with “Check spelling. You can access this via Edit → Spelling and Grammar, or via Spelling and Grammar in the right-click (⌃+click) context menu. IA Writer for Mac use OS X’s built-in spell checking, which can check in multiple languages.