I would like to have a better treatment of polysemic words. Maybe you offer several fields for the polysemic words.
Actually in previous version of Wokabulary you could separate synonyms with a @ character when adding new words, so Wokabulary would add multiple word pairs with one click. But we found it too hidden a feature for most people.
Please note that Wokabulary knows about synonyms and in the typing quiz it will handle gracefully when you enter a synonmy of the word it actually wanted to know.
Note: Yes, of course polisemic words and synonyms are two distinct things. But from the applications perspective it is similar because two word pairs share the same word on one side.