Perfect Dictionary offers an offline dictionary that covers over fifty languages that can be searched simultaneously. The app also has support for audio pronunciations of words and the ability to mark words as favorites that can be pinned to your Start Screen.
You can download as many dictionaries as your Windows Phone storage will allow and as you search for a word, the entire downloaded dictionary database will be scanned. You also have the option to import dictionaries from your SD card.
Now we can use this app on Desktop or tablet, install on SD card also.
Free download here or use QRcode below: