interpellate / interpolate [ɪnˈtɜrpəlɛit]
interpellate – v. intr. – 1. interrupt; 2. to question formally about a governmental policy or decision
interpolate – v. tr. – 1. to alter or corrupt (as a text) by inserting new or foreign material, especially to change by inserting material new or foreign to the purpose of the author; 2. to insert between other things or parts; 3. to estimate values of a function between two known values