ability to hover over words in the record and listening sections
Allow the words to be hovered over once an answer has been submitted for the recording, listening and other sections.
Since in these sections you can get the answer right without a full understanding of all the words (e.g. for recording you need to be able to speak not understand) an ability to hover over the words and get definitions would be useful.
You should only allow these sections to be hover-able after the answer has been submitted (tick sections would be too easy otherwise), if the answer is correct make all the words entered hover-able, if the answer is wrong duolingo already shows the correct answer and those words are hover-able.