executory /ɪɡˈzɛk.jʊ.tə.ɹi/ adjective2 •Of or pertaining to administration or execution.An executory interest is a future interest in a grantee which will not automatically become possessory and which follows a prior estate which will not terminate inevitably. — 2005 •Yet to be completed; not fully executed, performed or carried out; lacking in execution, unfulfilled; so, yet to take effect.