Learn SERENDIPITOUS from sentences of classic books. The app collects 10,000 middle or hard words; input your word, you not only get its meaning and example, but also have sentences and their contexts from classic literatures.
This Wimbledon was serendipitous for the 30-year-old from Switzerland. Even the timing of the rain during Sunday's final, which required the closing of the now-notorious roof for the ninth time in the tournament, was ideal.