Grammarly is a web-based program that connects to your browser (e.g. Chrome) to help with grammar mistakes and to give word definitions. By adding the extension to Chrome (or whatever browser you use), you will be able to see grammar mistakes in your typed responses as well as learn the definition of any word or term by double-clicking on it.
In addition to providing word definitions, Grammarly's writing app makes sure everything you type is easy to read, effective, and mistake-free. The program automatically detects grammar, spelling, punctuation, word choice and style mistakes in your writing. It flags potential issues in the text and suggests context-specific corrections for grammar, spelling and usage, wordiness, style, punctuation, and even plagiarism. Grammarly explains the reasoning behind each correction, so you can make an informed decision about whether, and how, to correct an issue.
For help adding the Grammarly extension to your web browser, see the article here.
For help adding the Grammarly plug-in to Microsoft Word, see the article here.