Among the options offered in English Dictionary - Offline, you can play every word and its corresponding definitions aloud. That said, for this feature you'll need an Internet connection to download the language pack.
Other noteworthy features include looking up a random word, or completely customizing the app interface by modifying the background color, fonts, hyperlinks, etc.
You can also swap the interface layout for a more classic one, although the default design is much more comfortable and easy to handle.
English Dictionary - Offline is a wonderful, simple, and easy-to-use English dictionary. And best of all, it also doesn't take up much space on your device's memory (14.5 MB).
Requires Android 2.3.3 or higher