In addition to all the definitions from Merriam-Webster's Collegiate Dictionary, this app offers voice search - to let you look up a word without having to spell it - along with synonyms, antonyms, example sentences, Word of the Day, and more. It's a great tool for reference, education, and vocabulary building. Merriam Webster Dictionary Features: Synonyms & Antonyms. Voice Search. Example Sentences. Audio Pronunciations. Word of the Day. Favorites - lets you keep a list of words that are particularly interesting to you. For Tablets: Scrolling Index - lets you browse the entire dictionary. Recent History - lets you keep track of the words you've looked up.