| teleologisch | teleological |
| theologisch | theological theologic |
| Teleologie | teleology |
| telefonisch | telephonic |
| geologisch | geologic geological |
| ideologisch | ideological ideologic |
| hemerologisch | hemerological |
| neurologisch | neurological |
| tautologisch | tautological |
| ethologisch | etologic |
| metrologisch | metrological |
| pulmologisch | pulmological |
| technologisch | technological |
| topologisch | topologic topological topologically |
| tropologisch | tropological |
| genealogisch | genealogical |
| Telugisch | Telugu |
| telegrafisch | telegraphic |
| telepathisch | telepathic |
| tellurisch | tellurian |