| theoretisch | theoretical |
| theokratisch | theocratic |
| theistisch | theistic |
| Theoretiker | theorist theoretician theorizer |
| thematisch | thematic thematically topical topically |
| theologisch | theological theologic |
| thermisch | thermal |
| thetisch | thetic |
| masoretisch | Masoretic |
| aporetisch | aporetic |
| häretisch | heretical |
| helvetisch | Swiss |
| hermetisch | hermetic |
| phonetisch | phonetic |
| athematisch | athematic |
| theosophisch | theosophic |
| atheistisch | atheistic |
| athermisch | athermal |
| metatheoretisch | metatheoretical |
| theatralisch | theatrical histrionic stagy |