Microsoft Word is a word processing application that can create and edit advanced features such as font sizes, font colors and font shadows. Word also has a feature -- WordArt -- that you can use to transform words into images in order to do sophisticated tasks. Find this feature in the "Text" section of the "Insert" tab of the ribbon. To create an opaque word in a document, use WordArt to type in the text, then mimic the font and font size to make the text look the same as the text in the rest of the document.
Open the Microsoft Word document, and note the font face and font size you are using in the document.
Click the "Insert" tab and then choose "WordArt." Choose "Wordart Style 1" from the upper left corner.
Type the word you would like to be opaque in the "Text" box. Click the "Font" down arrow and choose the font face you've noted in Step 1; click the "Size" down arrow and choose the font size you've noted in Step 1. Click the "OK" button.
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Click the "Shape Fill" down arrow from the "WordArt Styles" section of the "Format" tab. Click "More Fill Colors" and then use the slider underneath the "Transparency" section to choose your desired opaqueness. Click the "OK" button.