What is "defeasible"

Defeasible \De*fea"si*ble\, a. [See Defeasance.] Capable of being annulled or made void; as, a defeasible title. -- De*fea"si*ble*ness, n.

a. (context legal logic English) Capable of being defeated, terminated, annulled, voided or invalidated.

adj. capable of being annulled or voided or terminated; "a claim to an estate may be defeasible so long as the claimant is under 21 and unmarried" [ant: indefeasible]

Defeasible may refer to:

• Defeasibility, possibility of a contract, proposition, or understanding being undone in certain circumstances
• Defeasible reasoning, a type of convincing but not rigorous philosophical reasoning
• Defeasible logic, a non-monotonic logic to formalize defeasible reasoning
• Defeasible estate, an estate created when a grantor transfers land conditionally