The metapuzzle page asks
… what are the most repe-ti-ti-ve parts of the answers to each of these puzzles?
The answers to the round puzzles are
- ELECTRICAL CONDUCTANCE
- FURTIVE ARCHIVING
Each of these answers has a repeated substring within the answer (always two letters, except for the last one, where it’s just a single letter).
The repeated strings are IN, VE, CT, IV, and E. Together these spell INVECTIVE.