Difficult Words is a mode that will prompt you with words you previously learnt and have been marked as difficult. This feature analyses which words you're having difficulty with (i.e. items you got wrong one or more times in the past) so you can practise them during a special session.
To find your Difficult Words, go to My Words by clicking on the book icon at the top of your Home screen. Then, click Review modes at the bottom of the screen.
To help you master a difficult word , you may be guided with spelling on typing tests.
You can mark or unmark a word as difficult in My Words or by clicking ⚡️ within any learning or review session.