Able to be turned upside down or overturned, usually referring to boats or ships.
From capsize (to overturn), which comes from Spanish 'capuzar' meaning to dive or plunge. The suffix -able means capable of or able to be.
The word 'capsize' might come from sailors diving off overturned ships, which is why Spanish sailors used 'capuzar'—it's like the word itself performs the action it describes!
Complete word intelligence in one call. Free tier — 50 lookups/day.