| Answer | Crossword Clue |
|---|---|
| TENABLE | Like a rational theory |
| TENABLE | Like a rational argument |
| NONZERO | Like a rational number's denominator |
| PET | Like a preferred theory |
| TENABLE | Like a good argument or theory |
| TENABLE | Like an excellent theory |
| ZEROSUM | Like chess, in game theory |
| SECURE | Like an encrypted transmission, in theory |
