IPA: /ˈkæp.saɪz/
KK: /ˈkæpˌsaɪz/
To make a boat or vessel turn over in the water, often causing it to sink.
The strong winds caused the small boat to capsize in the storm.
Past: capsized
Past Participle: capsized
Capsize → It is formed from "cap" (from Latin "caput", meaning head) and "-size" (from Old French "tailler", meaning to cut or shape). The word originally referred to the act of a vessel turning over, as if its head is cut off or turned upside down.
Imagine a boat's 'head' ('caput') being 'cut' or turned over, which helps you remember that 'capsize' means to turn over in the water.