Can I get the spellchecker in MS Word to remember my grammar decisions?

Sometimes Word will make a incorrect grammar suggestion which I can just ignore.

However every time I go to spellcheck it again, it will keep making that suggestion. Is there any way I can get it to remember not to make that particular suggestion for that phrase in that document.

To prevent Word from spell-checking just one word in the document, one could apply a style that doesn't spell-check. This will require creating a new style, if you don't wish to destroy an existing one.

The steps to follow are :

1. Apply a style to the terms you want skipped. You can use an existing style or create a custom style but the style you apply to the terms you want skipped must be different from the other styles used throughout the document.
2. Click the Home tab and click the Styles group's dialog launcher.
3. In the Styles task pane, select the style you want skipped.
4. From the style's dropdown menu, choose Modify.
5. In the resulting dialog box, choose Language from the Format dropdown.
6. Check the Do Not Check Spelling Or Grammar option.
7. Click OK twice and close the Styles task pane.

For more information see : Skipping text in Word while spell checking a document.

For spelling errors, right click on the offending word and click "Add to Dictionary". For offending grammar, right click in the grammar error and click "Ignore Rule". Any use of these words and phrases will no longer be flagged in the document.