Not declared

present participle of undeclare

Third-person singular simple present indicative form of undeclare

(transitive) To reverse the process of declaring; to unsay. / (transitive, programming) To revoke the declaration of (a variable, namespace, etc.) so that it is no longer available.

plural of undeclaration

(computing, programming) The act of undeclaring something previously declared.

Not declarable

work for which payment is made but no taxation is paid