A full version app for Android, by Rapid App.
This app will show you the meaning of all the English words, with their definition, synonyms, antonyms, and example sentences.
The dictionary is very easy to use, and it's all offline, so you don't have to worry about your data, and it's all free!
It also has a very easy user interface, which means that even people who don't know much about programming can easily use it.
You can add words to your favorites list, and you can also add the words you want to learn, so you can check them out later.
The app also has a search function, which means you can search for the words you want to learn.