The Oxford Wordpower Dictionary is widely regarded as one of the most effective tools for intermediate to upper-intermediate learners of English. For Arabic speakers, the specialized "English-English-Arabic" edition bridges the gap between learning English definitions and understanding them through Arabic translations.
Before we proceed, a note on ethics and quality. You will find many websites offering "free" PDF downloads. However, these are often: The Ultimate Guide to the Oxford Wordpower Dictionary
If you are searching for the "Oxford Wordpower Dictionary English-English-Arabic PDF better", the ideal path is a hybrid approach: The Ultimate Guide to the Oxford Wordpower Dictionary
For the English word "happy", the deep feature representation might look like this: The Ultimate Guide to the Oxford Wordpower Dictionary