IPA: /dɪˈfiːzəbl/
KK: /dɪˈfiːzəbl/
Able to be canceled or made invalid.
The contract included a defeasible clause that allowed either party to withdraw under certain conditions.
Defeasible is formed from "de-" (meaning down or away) and "facere" (meaning to do or make), combined with the suffix "-ible" (meaning capable of). The word describes something that is capable of being undone or made ineffective.
Think of something that can be 'done away with' ('de-') and 'made' ('facere') ineffective — that's what defeasible means.