capsize
verb (used with or without object)
to turn bottom up; overturn: With a strong kick he capsized the stool.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
He had confessed to Hugh in strict confidence that he had managed to fashion a little model aeroplane that he believed to be uncapsizable.
From The Boy Scouts of the Flying Squadron by Robert Shaler