

She lost her footing and tumbled down the steep staircase.
[ʃi ˈlɔst ˈhɜr ˈfʊtɪŋ ənd ˈtəmbəld ˈdaʊn ðə ˈstip ˈstɛrˌkeɪs.]
Toddlers tumble constantly, so cushion any sharp furniture corners.
[ˈtɑdlərz ˈtəmbəl ˈkɑnstəntli, ˈsoʊ ˈkʊʃən ˈɛni ˈʃɑrp ˈfɜrnɪtʃər ˈkɔrnərz.]
He went tumbling off his bike on that treacherous bend.
[hi ˈwɛnt ˈtəmbəlɪŋ ˈɔf ˈhɪz ˈbaɪk ˈɔn ˈðæt ˈtrɛtʃərəs ˈbɛnd.]
"tumble" is in the lesson "Accident" (Level 24), along with 9 other useful words. LinDuo has 180 topic lessons like this one, 2,375 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.