| Term | Definition |
| cata | down, away from (catapult) |
| de | down, away from (decline, decrease) |
| tele | far, distance (telephone) |
| intellect, intellig | power to know (intelligent) |
| mem | remember (memory) |
| sens | think, perceive, feel (sense) |
| catacomb | underground cave or tomb |
| catalyst | a substance that speeds up or causes a reaction; |
| catastrophe | a tragic event; sudden disaster or misfortune |
| debark | to exit a ship; to go on land |
| default | failure to do something, be somewhere, or pay money that is due |
| degrade | to lower in status; to show contempt or dishonor |
| depose | to remove from office |
| telemarket | to solicit products or services over the telephone |
| telepathy | communication by means other than normal sensory communication |
| telephoto | a camera lens that makes distant objects appear closer |
| commemorate | to remember or honor with a ceremony |
| immemorial | very old; ancient; extending back in time beyond record or memory |
| intellectual | appealing to the intellect |
| intellectualize | to reason or think rationally, ignoring all emotions |
| intelligible | capable of being understood |
| memento | something that is a reminder of a person or event; a souvenir |
| memoir | a short biography; a scientific record |
| sensation | something learned or experienced through one of the senses |
| sensible | having or using good sense or good judgement |
| sensitive | easily affected by external influences; easily hurt or annoyed |