| Cast of characters in "The Big Bang Theory |
| Involving practical participation rather than theory |
| A doctrine or theory |
| Smith who wrote The Theory of Moral Sentiments |
| Sheldon's buddy on "The Big Bang Theory |
| Ancestors in Darwin's theory |
| Important drive in Freudian theory |
| Sheldon's apartment-mate on "The Big Bang Theory |
| Pasadena institute where most of "The Big Bang Theory" characters work |
| Chaos theory principle |
| Number theory preposition |
| 'The Theory of Everything' co-star |
| Discipline that draws from Marxist, feminist, and critical race theory |
| Einstein's famous theory |
| Berlin School psychological theory |
| Actor Redmayne of "The Theory of Everything |
| A certain doctrine or theory |
| Actor Scott of "Quantum Leap |
| Believed, as a theory |
| Word with theory or therapy |
| ___ hypothesis (ecological theory concerning the earth) |
| Actor Johnny of "The Big Bang Theory" and "Roseanne |
| Adherent of the clockwork universe theory |
| Quantum physics pioneer |
| Quantum Leap" star Scott |
| Pioneer in algebraic theory |
| Pioneering quantum theorist |
| Quantum event? |
| Element of chaos theory |
| Quantum mechanics model |